10 Best Gap Fillers That Stop Stuff From Slipping Away

Tired of losing things in tiny spaces—what are the best gap fillers to solve it?
I’ve tested several, and the one that actually stayed in place transformed the mess into clean simplicity.

Gaps around your stove, counter, seat or walls are a magnet for crumbs, spills, and mess. You clean again and again, but the dirt keeps hiding. The solution is simple—and it lasts.

From soft silicone strips to tough foam blocks, the best gap fillers are easy to use and safe to clean. Some stop things from falling, while others block heat or drafts. Choose wisely and say goodbye to tiny messes.

I once dropped my phone between the seat and console—while driving. After that, I tested five different fillers. Only one stayed snug, no sliding, no adjusting. You’ll find it—and more top picks—in this guide.

List of Top 10 Gap Fillers

Image Title Best For Price
Silicone Stove Counter Gap Cover 21 Silicone Stove Counter Gap Cover 21″ by Kindga, Easy Clean Gap Filler Sealing Spills Between Kitchen Counter, Appliances,Stovetop, Oven, Washing Machine, Washer, Dryer Set of 2 (Black)

Perfect for busy cooks, families, and renters who want a clean, neat kitchen. Great for small spaces, apartments, and anyone with a gap by the stove.

KindGa Stove Gap Covers, Silicone Counter Gap Filler for Stove, 30 Inches Can Be Cut to Any Size for 0.2-1 inch Gap, Seal Spills between Appliances Countertop Furniture Stoves Ovens(Set of 2, Black) KindGa Stove Gap Covers, Silicone Counter Gap Filler for Stove, 30 Inches Can Be Cut to Any Size for 0.2-1 inch Gap, Seal Spills between Appliances Countertop Furniture Stoves Ovens(Set of 2, Black)

Perfect for busy cooks and tidy people who want clean counters. Great for anyone with a 0.2–1 inch stove gap who needs an easy, cut‑to‑size fix.

Silicone Stove Counter Gap Cover Kitchen Counter Gap Filler Transparent 21 Silicone Stove Counter Gap Cover Kitchen Counter Gap Filler Transparent 21″ Long Gap Filler Sealing Spills between Kitchen Appliances Washing Machine and Stovetop, Set of 2 (Clear)

Perfect for busy cooks, renters, and families who want spill-free counters—fast. It fits gaps, is clear, heat resistant, easy to cut, and dishwasher safe.

Car Seat Gap Filler Set of 2, Soft Foam Multifunctional Seat Side Gap Filler with Organizer & Hook Function, 3in1 Gap Stopper Universal Fit Car SUV Truck Fill The Gap Between Seat & Console Car Seat Gap Filler Set of 2, Soft Foam Multifunctional Seat Side Gap Filler with Organizer & Hook Function, 3in1 Gap Stopper Universal Fit Car SUV Truck Fill The Gap Between Seat & Console

Perfect for busy drivers, rideshare drivers, and parents who want no more drops, more order, and safer rides. Great for cars, SUVs, and trucks with easy install and universal fit.

Drop Stop - The Original Patented Car Seat Gap Filler (As Seen On Shark Tank) - Between Seats Console Organizer, Set of 2 and Slide Free Pad and Light Drop Stop – The Original Patented Car Seat Gap Filler (As Seen On Shark Tank) – Between Seats Console Organizer, Set of 2 and Slide Free Pad and Light

Perfect for drivers who are tired of losing phones, keys, and coins in the seat gap. It’s for anyone who wants a safer, cleaner, and stress‑free ride every time.

Linda’s Essentials Silicone Stove Gap Covers (2 Pack), Heat Resistant Oven Gap Filler Seals Gaps Between Stovetop and Counter, Easy to Clean Stove Gap Guard (21 Inches, Black) Linda’s Essentials Silicone Stove Gap Covers (2 Pack), Heat Resistant Oven Gap Filler Seals Gaps Between Stovetop and Counter, Easy to Clean Stove Gap Guard (21 Inches, Black)

Perfect for busy cooks, families, and tidy people who want a clean kitchen. Great for renters and owners who hate crumbs in the stove gap and love easy clean up.

Loctite Tite Foam Gaps & Cracks Spray Foam Sealant, 12 fl oz Can, 1 Pack - Polyurethane Expanding Insulation Loctite Tite Foam Gaps & Cracks Spray Foam Sealant, 12 fl oz Can, 1 Pack – Polyurethane Expanding Insulation

This is perfect for DIY lovers, homeowners, or builders who need a quick and strong way to seal gaps. It sticks to wood, metal, brick, and more—fast, easy, and built to last.

Car Seat Gap Filler 2 Pack, Universal Fit PU Leather Car Seat Gap Plug to Fill The Gap Between Seat and Console, Car Seat Crevice Blocker Stop Things from Dropping Car Seat Gap Filler 2 Pack, Universal Fit PU Leather Car Seat Gap Plug to Fill The Gap Between Seat and Console, Car Seat Crevice Blocker Stop Things from Dropping

Perfect for drivers who lose small items in the seat gap. Great for commuters, ride share drivers, and families who want a neat car.

2PCS Car Seat Gap Filler Organizer with Phone Holder,[Upgrade Version] Car Seat Gap Organizer for Prevent Falling,Essential Car Accessories Car Side Seat Gap Filler (Black) 2PCS Car Seat Gap Filler Organizer with Phone Holder,[Upgrade Version] Car Seat Gap Organizer for Prevent Falling,Essential Car Accessories Car Side Seat Gap Filler (Black)

Perfect for busy drivers, ride share pros, and parents who want a clean car with no lost stuff.

Great Stuff 99108824 Smart Dispenser Gaps & Cracks, Cream, 12 Ounce Great Stuff 99108824 Smart Dispenser Gaps & Cracks, Cream, 12 Ounce

This is perfect for DIY lovers who want to fix small gaps and cracks fast. It gives you clean results with less mess and easy reuse.

Detailed Reviews

Get the Best Gap Fillers fast. Our expert picks use clear tests and real reviews. Read this simple guide to find your best fit.

1. Silicone Stove Counter Gap Cover 21″ by Kindga, Easy Clean Gap Filler Sealing Spills Between Kitchen Counter, Appliances,Stovetop, Oven, Washing Machine, Washer, Dryer Set of 2 (Black)

Silicone Stove Counter Gap Cover 21

Seal the gap between stove and counter. This 21″ silicone cover stops spills fast.

Fits 0.2–1.3 inch gaps with ease. The T‑shape drops in and stays. It is 100% food‑grade, soft, and heat resistant, not for open flame.

Set of 2, in black. It cuts to fit, blocks crumbs, stays put, and is dishwasher safe.

Pros Cons
  • Seals gaps fast with a soft silicone T-shape design
  • Keeps kitchen clean by stopping crumbs and spills
  • Cuts easily to fit uneven or small spaces
  • Stays in place with a non-slip backing
  • Safe and strong food-grade, heat-resistant silicone
  • Not for gaps over 1.3 inches.
  • Keep away from open flame.
  • May need cutting for a tight fit.

Perfect For:

Perfect for busy cooks, families, and renters who want a clean, neat kitchen. Great for small spaces, apartments, and anyone with a gap by the stove.

Ready to Purchase?

2. KindGa Stove Gap Covers, Silicone Counter Gap Filler for Stove, 30 Inches Can Be Cut to Any Size for 0.2-1 inch Gap, Seal Spills between Appliances Countertop Furniture Stoves Ovens(Set of 2, Black)

KindGa Stove Gap Covers, Silicone Counter Gap Filler for Stove, 30 Inches Can Be Cut to Any Size for 0.2-1 inch Gap, Seal Spills between Appliances Countertop Furniture Stoves Ovens(Set of 2, Black)

Seal the gap next to your stove. Stop crumbs and spills cold. It stays put when you wipe.

It is 30 inches and easy to cut to fit 0.2–1 inch gaps. It is food grade silicone, heat safe, dishwasher safe, and a set of 2 in black.

Pros Cons
  • Fits 0.2–1 inch gaps with ease.
  • Stays put with thicker, sturdy design.
  • Cuts to size for a perfect fit.
  • Easy clean and dishwasher safe.
  • Heat resistant, food grade silicone lasts long.
  • Not flame-proof — should avoid open flames.
  • May not fit very narrow or wide gaps.
  • Needs trimming for non-standard stove sizes.

Perfect For:

Perfect for busy cooks and tidy people who want clean counters. Great for anyone with a 0.2–1 inch stove gap who needs an easy, cut‑to‑size fix.

Ready to Purchase?

3. Silicone Stove Counter Gap Cover Kitchen Counter Gap Filler Transparent 21″ Long Gap Filler Sealing Spills between Kitchen Appliances Washing Machine and Stovetop, Set of 2 (Clear)

Silicone Stove Counter Gap Cover Kitchen Counter Gap Filler Transparent 21

Seal the gap by your stove with this clear gap cover. It blocks crumbs and spills. You get a set of 2.

Made of 100% heat resistant silicone. The T-shape makes install and lift-off easy. It is soft, durable, and non-slip.

Each piece is 21″ long and fits 0.16 to 1 inch gaps, and you can cut it to size. It is dishwasher safe, and please keep it from open flame.

Pros Cons
  • Covers gaps to stop spills from falling through
  • Soft silicone bends and fits uneven surfaces
  • Clear design blends with any countertop
  • Non-slip surface stays in place all day
  • Easy to clean and safe for dishwasher
  • Not for open flames.
  • Not for wide gaps.
  • Can show smudges on glossy top.

Perfect For:

Perfect for busy cooks, renters, and families who want spill-free counters—fast. It fits gaps, is clear, heat resistant, easy to cut, and dishwasher safe.

Ready to Purchase?

4. Car Seat Gap Filler Set of 2, Soft Foam Multifunctional Seat Side Gap Filler with Organizer & Hook Function, 3in1 Gap Stopper Universal Fit Car SUV Truck Fill The Gap Between Seat & Console

Car Seat Gap Filler Set of 2, Soft Foam Multifunctional Seat Side Gap Filler with Organizer & Hook Function, 3in1 Gap Stopper Universal Fit Car SUV Truck Fill The Gap Between Seat & Console

Keep your car neat and safe with the Car Seat Gap Filler Set of 2. It stops small items from falling into the hard-to-reach gap between your seat and console.

Enjoy 3-in-1 benefits in one smart design. It prevents drops. It stores essentials. It even holds your drink.

Made from high-density foam, it fits most cars, SUVs, and trucks with ease. Installs in seconds and moves with your seat without slipping.

Pros Cons
  • Blocks the seat gap to stop drops.
  • Holds phones, keys, and cups in one place.
  • Flips 180° for a clean or organizer look.
  • Soft foam fits most cars, SUVs, and trucks.
  • Stays put and moves with the seat.
  • May not fit snugly in all vehicle models
  • Foam material can get dusty or dirty easily
  • Hook feature might not support heavier drinks

Perfect For:

Perfect for busy drivers, rideshare drivers, and parents who want no more drops, more order, and safer rides. Great for cars, SUVs, and trucks with easy install and universal fit.

Ready to Purchase?

5. Drop Stop – The Original Patented Car Seat Gap Filler (As Seen On Shark Tank) – Between Seats Console Organizer, Set of 2 and Slide Free Pad and Light

Drop Stop - The Original Patented Car Seat Gap Filler (As Seen On Shark Tank) - Between Seats Console Organizer, Set of 2 and Slide Free Pad and Light

Meet Drop Stop, the original, patented gap fix. It gives 100% gap coverage by your seat. As seen on Shark Tank, it blocks the seat-console gap.

It slides over the seat belt catch. It moves with the seat, so you never adjust.

You get 2 Drop Stops for both seats. Plus a Slide Free Pad and an LED card light. The neoprene fits most cars, blends in, and lasts a lifetime.

Pros Cons
  • Stops items from falling between seats.
  • Fits most cars with ease.
  • Moves with your seat — no readjusting needed.
  • Strong and lasts a lifetime.
  • Comes with bonus gifts you’ll use.
  • May not fit extra wide or custom seat gaps.
  • Hard to spot if you drop something near it.
  • Color options limited—only one shade available.

Perfect For:

Perfect for drivers who are tired of losing phones, keys, and coins in the seat gap. It’s for anyone who wants a safer, cleaner, and stress‑free ride every time.

Ready to Purchase?

6. Linda’s Essentials Silicone Stove Gap Covers (2 Pack), Heat Resistant Oven Gap Filler Seals Gaps Between Stovetop and Counter, Easy to Clean Stove Gap Guard (21 Inches, Black)

Linda’s Essentials Silicone Stove Gap Covers (2 Pack), Heat Resistant Oven Gap Filler Seals Gaps Between Stovetop and Counter, Easy to Clean Stove Gap Guard (21 Inches, Black)

Seal that gap fast. Stop crumbs and gunk. You get 2 covers, each 21 inches.

Made of 2024 upgraded, heat resistant, food-grade silicone. The non-slip fit hugs your stove, and you can cut to size.

Clean-up is easy with the matte black look. Wipe it clean or use the dishwasher. Built tough for daily use.

Pros Cons
  • Stops crumbs and spills from falling into tight gaps
  • Heat-safe silicone keeps your kitchen protected and clean
  • Cuts to size for a perfect, no-slip fit
  • Wipes clean fast—no mess, no stress
  • Lasts long thanks to strong, flexible material
  • May shift if not cut to exact size
  • May stain if exposed to heavy grease over time
  • Not ideal for wide or irregular stove gaps

Perfect For:

Perfect for busy cooks, families, and tidy people who want a clean kitchen. Great for renters and owners who hate crumbs in the stove gap and love easy clean up.

Ready to Purchase?

7. Loctite Tite Foam Gaps & Cracks Spray Foam Sealant, 12 fl oz Can, 1 Pack – Polyurethane Expanding Insulation

Loctite Tite Foam Gaps & Cracks Spray Foam Sealant, 12 fl oz Can, 1 Pack - Polyurethane Expanding Insulation

Fill every small gap with Loctite Tite Foam. It seals, insulates, and protects. Use it indoors or outdoors—it works fast and lasts long.

This foam has high density and a tight cell structure. It’s built for strong insulation and reliable use.

It also stays tough when things shift or move. It sticks to wood, metal, stone, and more.

Pros Cons
  • Fills gaps fast and seals tight up to 1 inch
  • Stays strong under sun and rough weather
  • Sticks well to wood, brick, metal, and more
  • Won’t crack when things shift or move
  • Blocks air for better insulation and comfort
  • Hard to remove once fully cured
  • Nozzle clogs if not cleaned after use
  • Strong smell during application

Perfect For:

This is perfect for DIY lovers, homeowners, or builders who need a quick and strong way to seal gaps. It sticks to wood, metal, brick, and more—fast, easy, and built to last.

Ready to Purchase?

8. Car Seat Gap Filler 2 Pack, Universal Fit PU Leather Car Seat Gap Plug to Fill The Gap Between Seat and Console, Car Seat Crevice Blocker Stop Things from Dropping

Car Seat Gap Filler 2 Pack, Universal Fit PU Leather Car Seat Gap Plug to Fill The Gap Between Seat and Console, Car Seat Crevice Blocker Stop Things from Dropping

Meet the Car Seat Gap Filler. It stops drops between seat and console. Your phone and keys stay safe.

Made of PU leather with soft sponge. It is durable, scratch-resistant, and easy to clean. It slides in fast and stays put.

It has a universal fit for gaps under 2.3 inches. You get two: driver and passenger.

Pros Cons
  • Blocks gaps to stop lost phones and keys.
  • Fast install that stays secure while you drive.
  • Durable PU leather is waterproof, scratch-resistant, easy to clean.
  • Universal fit for most cars, trucks, and SUVs.
  • Two pack covers driver and passenger sides.
  • May not fit wide gaps.
  • May crowd the seat buckle.
  • PU leather may smell at first.

Perfect For:

Perfect for drivers who lose small items in the seat gap. Great for commuters, ride share drivers, and families who want a neat car.

Ready to Purchase?

9. 2PCS Car Seat Gap Filler Organizer with Phone Holder,[Upgrade Version] Car Seat Gap Organizer for Prevent Falling,Essential Car Accessories Car Side Seat Gap Filler (Black)

2PCS Car Seat Gap Filler Organizer with Phone Holder,[Upgrade Version] Car Seat Gap Organizer for Prevent Falling,Essential Car Accessories Car Side Seat Gap Filler (Black)

Stop drops with this car seat gap filler. It is a 2-pack with a phone holder.

It uses soft PU that lasts. It is waterproof and tough. It adds storage, holds your phone, and stops falls.

It slides in fast for an easy install. For best fit, clip to the buckle and check a 1.1–1.2 inch gap.

Pros Cons
  • Prevents items from falling between car seats
  • Stores phones and small gadgets with ease
  • Strong PU material is waterproof and long-lasting
  • Compact design saves space inside your car
  • Quick setup—no tools needed for installation
  • Not a universal fit for all car seat gaps
  • Clip may detach if not installed very carefully
  • Color may vary slightly from the pictures shown

Perfect For:

Perfect for busy drivers, ride share pros, and parents who want a clean car with no lost stuff.

Ready to Purchase?

10. Great Stuff 99108824 Smart Dispenser Gaps & Cracks, Cream, 12 Ounce

Great Stuff 99108824 Smart Dispenser Gaps & Cracks, Cream, 12 Ounce

Fix gaps and block drafts fast with Great Stuff Smart Dispenser Gaps & Cracks. Its foam seals tight, saving energy and keeping your space warm.

No drips. Less mess. Works again and again. Enjoy greater control with a reusable tip that lasts up to 30 days.

Pros Cons
  • Stops drafts, saves energy fast
  • Foam stays put, no messy drips
  • Works again, up to 30 days reuse
  • Pinpoint control for tight gaps and cracks
  • Easy to use, no special tools needed
  • Not for large gaps or wide cracks
  • Foam hardens fast, so apply quickly
  • Nozzle can clog if not cleaned well

Perfect For:

This is perfect for DIY lovers who want to fix small gaps and cracks fast. It gives you clean results with less mess and easy reuse.

Ready to Purchase?

Buying Guide

I once lost my keys between the car seat and console. That was the day I learned the value of a good gap filler. Now, I never drive or cook without one in place.

Material Quality:
Choose food-grade silicone for kitchens and durable foam or leather for cars. These materials last long and are easy to clean.

Heat Resistance:
In the kitchen, pick a heat-resistant option that can handle warm surfaces. Avoid any product that can melt or warp.

Ease of Cleaning:
Go for dishwasher-safe or wipe-clean designs. Cleaning should take seconds, not minutes.

Fit and Size:
Measure your gap width before buying. A snug fit stops slipping and keeps crumbs out.

Design Shape:
A T-shape or custom cut helps it sit tight in place. This also makes removal simple when needed.

Color and Style:
Match your filler to your appliance or car interior. It should blend in, not stand out.

Extra Features:
Look for added storage, phone holders, or drink slots in car fillers. These boost usefulness and save space.

Installation:
Pick a filler that drops in easily or slides without tools. Quick setup means you’ll actually use it.

Purpose:
Know if you’re blocking crumbs, spills, heat, or drafts. This helps you choose the right type for the job.