I am away on holidays and a neighbor is looking after our 3, 3 month old chickens. They said that they found a rat in the coop in the morning and I cannot even figure out how it would get in. This is a link if you want more details about the coop: https://www.aosom.ca/item/pawhut-77...tch-with-nesting-box-run-green~D51-092GN.html We leave the ramp open at night because I have put hardware cloth along the bottom of the run. The venting has hardware cloth stuck inside. I have wedged the floor of the nesting box down, but it does have 1/4" gaps in the floor. I have found that the tray under the coop can be budged open, so I've pinned those with a stake in the ground. For now, they will bring the food and water in at night, but I can't, for the life of me, figure out where they are getting in. I don't know if anyone else has this problem or if you can see a design flaw. When I get home I will hardware cloth the coop and nesting box bottoms. Any other suggestions would be helpful. I am new to chickens and am at the end of any ideas that I had. I have included a picture of the run that the smaller coop is inside of, in case that is relevant. It is not fully predator proof yet, as I will still bury wire. I just thought it could wait because the inside one should have been ok.