Need help to repair hole in unfinished basement
We are having problems with field mice getting in our basement. After pulling away some loose insulation I found a three inch hole surrounding a plumbing hookup going out of the top of our basement wall near the windows. We have owned the home for 15 years, but it is the first time I have noticed it. Can anyone suggest a repair. I am not the most handiest homeowner but would like to seal it. Any suggestions??