Sealing the entry points to a home is something every pest control expert will suggest after the cleaning and the tidying up. This way mice cant get in your house and the ones that already in wont escape the eradication that will follow. It is essential that you seal your home before you begin to try to get rid of mouse.
To seal your home from mice you should first remind yourself that mice can squeeze through holes that are less than an inch or a few centimeters wide. This will give you an idea of where and how to start looking for entry points in your home.
This is the most difficult part of the process of getting rid of a mouse population because you will have to examine every nook and cranny of your houses exterior and interior to see if there are any small holes a mouse can use to get in your home.
If you find a hole that you think a mouse can use to get in then seal it using a gnaw proof material. If the hole is a bit larger then use mortar. Keep in mind that mice can climb so make sure you seal the holes that are off the ground as well. Plumbing and wiring entry points to your house are favourite entry points for mice so make sure you check those.