Mouse-Gap Kit
See this photo larger

Before they move in for winter

Mouse-Gap Kit

$24.99U.S. shipping included

Buy more, save more

Mix and match the gloves, the meter and the winter kits. The discount is taken off in your cart.

When it turns cold, mice look for a way in. Stuff copper mesh into the gaps around pipes, vents and wires, and close the gap under the door.

A mouse can squeeze through a gap about the width of a pencil.

  • 2 rolls of copper mesh. Stuff it into gaps with a screwdriver.
  • Doesn't rust. Copper holds up in damp crawl spaces.
  • Under-door seal. Closes the gap at the bottom of the door.
  • 30-day money-back. You don't send it back.

Ships to the lower 48 states and Washington, D.C. Most orders arrive in 7–15 business days. We email you the tracking number when it ships.

30-day money-back. Nothing to send back.

Email us within 30 days of the day your kit arrives. We refund you within 7 business days, and you keep it. If it arrived damaged, we'll just ask for a photo.

Buying a gift? Orders placed from November 1 to December 24 can be refunded until January 31, so there's time to open it first. You still don't need to send it back. If your 30 days end later than that, you get the later date.

What's in the box

  • Rolls of copper mesh

    About 5 inches wide and 10 feet long each. Cut it with old scissors and stuff it into gaps.

  • Under-door seal

    Gray, about 36 inches long. Two foam tubes that slide under the door, one on each side. Cut to fit your door.

Good to know
  • Walk your walls first. Look where pipes, wires and vents come into the house: under the sinks, behind the stove and the washer, around the dryer vent, along the foundation.
  • Stuff the mesh in tight with a screwdriver, so it fills the whole gap. For a neat finish, seal over it with caulk.
  • Wear gloves. The cut ends of the mesh are sharp.
  • If mice are already inside, set traps first, then seal. Don't close a mouse in.
  • This closes gaps. It's not a guarantee. Mice are clever, and a bigger hole needs hardware cloth or a pro.
The plain facts
  • Made in China, shipped to you from overseas. Most orders arrive in 7–15 business days.
  • We ship to the lower 48 states and DC. We can't ship to Alaska, Hawaii, U.S. territories or APO/FPO addresses yet.
  • If your order can't ship in time to reach you in 7–15 business days, we'll email you a new date, and you can cancel for a full refund.
  • The items may arrive in separate packages, a few days apart. We email you the tracking for each.
View full details

The why

Why copper mesh

Mice chew through foam, cardboard and plastic. Stuffed tight into a gap, metal mesh is hard for them to pull out or chew through, and copper doesn't rust in a damp crawl space the way steel wool does. The door seal closes the other easy way in, the gap at the bottom of the door.

Before they move in

Three habits that make your house less inviting to mice.

  • "Keep the bird seed, the pet food and the grass seed in metal cans with tight lids."

  • "Stack the firewood away from the house, and off the ground."

  • "Check the gaps again in late fall. That's when mice start looking for a warm place."

Goes well with it

Goes well with it

  • Draft Stop Kit

    Seal the drafts at doors and windows.

    $34.99

  • Frozen Pipe Kit

    For the faucets and pipes before the freeze.

    $34.99

Plain and simple

Our Porch Promises

  • A real business you can reach.

    First Frost Home is run by one person, Miguel Nunes da Costa, a sole trader in Portugal. Write to . Our postal address is at the bottom of every page.

  • Shipping is in the price.

    U.S. shipping is included, and we email you the tracking number when your order ships.

  • 30-day money-back, nothing to send back.

    If it isn't right for you, write to us and we refund you. You keep it.

  • No tricks.

    No made-up reviews, no countdown clocks, no "only 3 left."

  • A real reply.

    We reply within 6 hours, Monday to Friday, 9 am–5 pm Eastern.

Before you buy

Questions about the kit

Can't find yours? Write to . We reply within 6 hours, Monday to Friday, 9 am–5 pm Eastern.

What's in the kit?

Two rolls of copper mesh, about 5 inches wide, and one slide-on under-door seal.

How do I use the mesh?

Cut a piece a bit bigger than the gap, roll it up and push it in tight with a screwdriver. For a neat finish, seal over it with caulk.

Will this keep every mouse out?

No kit can promise that. It closes the small gaps that mice use most. If you already have mice inside, set traps first, and for bigger holes use hardware cloth or call a pro.

Will everything arrive together?

Maybe not. The items can ship in separate packages and arrive a few days apart. We email you the tracking for each one.

How long does shipping take?

Most orders arrive in 7–15 business days. We email you the tracking number when it ships.

What if it's not right for me?

Write to within 30 days of the day it arrives, and we'll refund what you paid within 7 business days. You don't send it back.

See all questions

Close the gaps before the cold sends them in.

$24.99U.S. shipping included

30-day money-back, no need to send it back.