How do i seal a door to prevent mice from coming in?

Following along with the other answers, some of the most common areas that mice get in are around water and drainage pipes in the house. A good way to seal those area up is with spray foam insulation, whether from ';great stuff'; or dap. However do not use that product around doors and windows it can cause sticking. Stick with the silicone products there. Good LuckHow do i seal a door to prevent mice from coming in?
if they are coming in around the door frame use a silicone type sealer.


if they are coming in under the door use a draught excluder fitted to the bottom of the door


if you want to try the old fashioned method get a cat lolHow do i seal a door to prevent mice from coming in?
Are you positive that they're coming in from the door? The above answer is good if that's where the problem is. If you do all that and still have mice, it is time to check for other cracks (1/4'; or larger).