Found lots of mice poops in cellar and in attic. Found a hole from outside where wood is rotted.
Renz...Are they in your yard? There are traps for both. You can Google to find or most hardware stores can help you. Good luck
Here are some useful tips Renz
Once you have closed up the hole, then you can begin to get rid of the mice. There are many products that contain peppermint & cinnamon oil that you can spray directly, spray on cottonballs, or put in small burlap bags and toss around. Sonic devices are good at keeping them away as well. Traps have never worked well for us. The poison that dries up the blood is best, if you go the poison route. Glue traps are good but you will have whatever pests crawl across it stuck for your removal. If you don't check and change often then you will have the decay scent - ugh.
Or call an exterminator and let them handle it. Heed their advice about plugging up any entry points.
As others have said, you want to close up the spot where they're getting in. If you can't replace the wood right now, try putting some metal mesh over it. We had a lot of mice last winter, and putting out traps can work, but you've got to check them and empty them regularly.
Mix 1 part flour, granulated sugar and baking soda. Place in shallow dish where mice are most likely to find it. You can sprinkle a little cinnamon sugar, chocolate powder or finely chopped nuts to make it more enticing – just add a bit more baking soda to compensate. What happens is when this hits their stomachs the baking soda forms a gas which rupture their stomachs = dead mice.
Soak a rag with ammonia and place in their holes. They’ll leave and never come back.
We used this in out shed. No more rats or mice. https://amzn.to/2U0PmwI