I dont know which I have more of,mud daubers or feral cats ,can't even leave these barns open any more with out them filling up with varmints.The mud daubers carry mud to build nests and have ruin't several electric motors ,and had some carry mud into a computer/printer. Feral cats started out alright catching mice and rats out of the store rooms but too much of a good thing,darn things are either fighting all nite and squalling so you cant sleep or having more cats,I use to trap em and have em spayed,but this is a little much guess ILL have to get serious.......good luck