Rats can be wonderful pets, but if uninvited they can be lousy houseguests. Rats like chewing on everything you have, including electrical wires and insulation. If you do not like the idea of having rats around but you do not want to kill them, then you can try different non-lethal ways to make the rats leave.
Get an ultrasonic pest repellent unit that can be placed in the electrical outlets around the home. The unit will emit a sound which will not bother cats, dogs and people but will drive mice and rats crazy. The problem is that you will not be able to use this method if you have gerbils or hamsters in the home.
You can also get a live trap. You can find these traps in different stores where they sell farming and hunting gear. There are also stores that rent these traps, but it is better to buy one for yourself if you want to make sure that you deal with the rat infestation as soon as it starts. If you have caught rats, you should remember to release them in an area where they will not be a problem to someone else. Put on gloves before you release them from the trap. The rats may have sharp teeth and they can be aggressive if they are frightened.
You have to make sure that you have sealed up each opening the mice may use to enter the home. You should repair the holes on the outside, skirting boards and floorboards. You can fix the air bricks and tidy up the cupboards. Remove all the nesting materials and inspect the doors, especially the garage door which is often the main entrance of the mice. You have to make sure that you have sealed everything well. You can use different materials to seal off such holes like a dish sponge, scouring pad or caulk and plaster.
Remember that mice like to live in places where there is dirt. You have to make sure that there are no lingering food crumbs near the home or stinking garbage that might attract the rats.
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We are the Pest Education Network, a non-profit organization that focuses on wildlife and pest removal education. Our approach utilizes Integrated Pest Management, a strategy advocating prevention and humane methods.