I live in an urban area. Saw a mouse in my yard last night (a big mouse - thought it was a rat at first). I have two chickens but I bring there food inside at night, all food is stored in the house, and I pick up any treat remnants from the run before going to bed at night, but I have seen a couple rodent droppings in my run. I know the mice aren't there because of the chickens, I've seen some droppings in my shed before, but didn't ever have a problem because of the feral cat living in the back part of my yard. We had to trap her and her sick kittens last summer and take them to a rescue, and now there are no feral cats killing the mice, I guess. I think the mouse may be living under the pallet I have my straw stored on, so I'm going to try raising that up on cinder blocks so it isn't as inviting. I have four indoor cats and was considering spreading some of their urinated on litter around that area, but don't know if that would help deter the mouse. Has anyone tried this? I don't know if it would work. I'd like to prevent a mouse explosion, though. I hate to trap them because I love animals and would feel horrible killing them, but from what I've read here, it sounds like traps are the best way to go.