Mouse-proofing silicone sealant may be the best solution depending on where the entry points to your home are. This type of sealant is best suited for use on surfaces made of glass or metal.
As shown in this picture, caulk was used to seal the gap. Mice can chew through caulk. Notice the gnawed hole leading into the basement.
Because your home's foundation is close to the ground, it provides easy access for curious mice to enter. Take a walk around your home and look for small cracks and gaps in the foundation. Seal the gaps with silicone caulk, which is tough enough to withstand exterior elements, and it will keep mice out.
Effective Foam Application
Pros and DIYers who use the right foams in the proper manner will block mice and pests from entering buildings while providing a long-lasting airtight and water-resistant seal.
Flex Paste can be used on windows, doors, vents, thresholds and so much more. It will create a watertight barrier that seals out air and moisture. Use Flex Paste to help prevent flood damage. It can even be used to fill large voids to help keep insects and rodents out of your home.
SEAL THEM OUT.
Help keep mice away by making certain you have adequate door sweeps installed on all exterior doors, and check that your windows are properly screened. Seal all openings outside the home using steel wool, wire mesh or similar materials. Don't overlook entryways into the attic and around the chimney.
A professional rodent exterminator costs about $245 to $430 to hire. This covers full-service treatment, including inspection, pest removal, and sealing entry points.
Unfortunately, mice enjoy the warmth of your clothes dryer just as much as you do. For rodents looking for a warm place to wait out the cold, a dryer vent is one of the easiest ways to get inside your cozy home.
Fill Up Holes With Steel Wool
Unlike insulation, paper, or even drywall, mice can't chew through steel wool, and even if they did, they'd be dead before they made it into your pantry. Stuff any holes where mice could be entering with steel wool and you'll keep them from sneaking in.
Two of the most effective natural repellents are apple cider vinegar and hot pepper. Mix water with either of these ingredients in a spray bottle and hit the areas where mice travel, potential entry points, and the perimeter of your home.
Mice hate the sound and smell of aluminum foil.
Mice will avoid them completely.
Flex Seal will last years when correctly applied. If you notice cracking or peeling, clean the area and apply a new coat to enjoy more watertight sealing.
Tomcat Rodent Block Expanding Foam Barrier fills gaps and cracks to keep mice from coming inside your home. This expanding foam is specially formulated to block mice, providing a long-lasting, airtight and water-resistant bond to most building materials. The foam can be trimmed, sanded, and painted if desired.
Rodents and small animals, if determined enough, can chew through many materials, including Great Stuff™ foam.
Loose-Fill Cellulose Insulation
Rodents specifically hate this because they cannot tunnel through walls with loose cellulose without it falling on them, preventing them from seeking refuge within your walls.
Spotting one elusive mouse typically means there are at least five or six hiding out in your walls, basement, or attic. This is particularly true if you see a mouse at night or in a low-traffic area of your home. For more proof of a full infestation, look for these indicators: Scratching noises in the evening.
It can take anywhere from two weeks to three months for your mice infestation to completely clear up, depending on the level of infestation. Large infestations take more time to handle than small ones.
The truth is that mice are difficult to eliminate for several reasons. One of the main reason is that they're resourceful and far more clever than your average spider or cockroach. No matter how pristine your home may be, it is susceptible to mice infestations.