I had chipmunks getting into my garage. I bought some of those ultrasonic sound generators that plug into wall outlets, and it seems to have solved the problem (or I've been lucky). I haven't seen any signs they have been back.

You really want to get them out. It seems that one of the latest "green ideas" is to make wiring insulation out of biological materials, making it tasty for rodents. One of my friends had to have his car wiring harness replaced because it was eaten by squirrels.

Try Bounce fabric softener sheets.

Mice HATE them.

Remember to keep the cat hungry else it is a self defeating purchase.

Not really. We've been feeding a feral cat for about two years now. Last fall when it got cold, I put a folded blanket in a low cardboard box in the garage, and the cat sleeps there now. I haven't seen or heard any sign of rodents since we started to feed it, except a couple of dead ones that the cat left on display outside the front door.

My relative had mouse issues in his home and was catching 3 a day but not denting the population, finally they called me to get my input. I distribute an ozone line of generators of my specifications and took one down and installed it in the garage the apparent point of entry. I told them to let it run and provide feed back. In three days his wife called and reported that she had to turn it off because she could smell ozone in the house but also they had not caught or seen a mouse in three days. Also the garage had no obnoxious odors in fact smelled super fresh.

I said so all is well and the reply was not quite the little buggers had been urinating in the basement family room and it was terrible, my next question was are you going away any time soon as it was late August and they had rented a cottage for a week. Since they had no pets, plants or people in the house while away I told her to move it to the basement upon leaving set it on hold and see what it does.

Result was not a trace of mouse urine and the whole house was odor free and clean. NOTE there are precautions to using Ozone but I have had success with almost every application including raccoons, rats, chipmunks, squirrels, and most insects.

Growing up in a 150 year old farm house we had mice every fall and the best trap was a round plastic device about diameter of a tea saucer 1-1/4 high with four holes with a spring loaded loupe that when triggered came up and choked the rodent. The best bait we found was a raisin with bacon fat. Almost every morning I had the job of emptying the trap and it almost always had 4 victims. I searched the net but this type of mouse trap I cannot find. Back to Ozone when the use is acceptable all things considered.

Peppermint oil is good for keeping rats away - I don't know whether it works as well for mice.

Maybe growing a few peppermint plants in strategic positions may deter them - it makes a refreshing drink too!

You got enough snakes,, you don't have to worry about mice...

Then you got yer biological mousetraps...

I knew a fellow who put two strips of copper tape across the inside of his door threshold about 2-1/2 inches apart. To this he connected 240vac. He said not to go barefoot in his shop.

Tearing down the engine in my TR3, I found that rodents had crawled up the exhaust manifold and nested in a piston down cylinder! Traps do work, but I think you need to keep the attractive smell of the bait stronger than the repellent smell of human hands.

I purchased a product called Home Medic at Walmart. 32 fl oz spray bottle made in USA by Hero pet brands. It repels mice and rats, kills fleas and eggs and mosquitoes and their larvae. Active ingredients are 0.20% peppermint oil, 0.40% eugenol, 1.78% sodium lauryl sulfate.

It's all about the strength of the odor....mice navigate by scent, overwhelming the sense of smell essentially blinds the mice...add irritable effect on nasal passageways and you have a winner...

https://mousetrapguide.com/do-mice-like-peppermint/

If you have lots of mice,I mean a LOT of mice,try this:

Fill a 55 gallon drum 2/3 full of water.Add 2 cups of chlorine bleach to the water.

Sprinkle cotton seed meal on top of the water about 1 inch thick.

Place a board at about a 20 degree angle from the floor to the top of the barrel.

Sprinkle a few crumbs on the board from the bottom to the top.

Place a piece of peanut butter-coated bread on top of the cottonseed meal.

The mice will go for the bread,and drown below the surface.It appears solid to the mice,because cottonseed meal repels water and floats.

This method will wipe out an entire colony of mice or Rats in a couple of weeks.

The immature ones have to mature enough to forage for food.

This method was used on the farm back in the '50s and '60s when the rodents outnumbered the ants and overwhelmed the cats and foxes.

As storm came through and laid the corn stalks on the ground.

A population explosion of mice and rats followed.

The cats and foxes could not keep up.

Normally,just the smell of a cat or fox will repel them.

I use diluted fox urine around my garden to repel rabbits.It works well.

Fox urine can be bought at sporting goods stores, used to mask scent by hunters,but remember to open it outside,it is very pungent.

Dilute it one ounce to 1 gallon of water and spray around the perimeter.

I have had good results using it once a season.

It seems the area gets marked as a danger zone by the animals.