Doesn't need to have the cats get out. My guys ended up with fleas within the last couple weeks & they are all house cats only. The fleas either came in on our pant legs or shoes or they migrated under the door on their own. I'm going thru the same problem. Except for Methos I have to wait til I get to the vet for the latest & greatest in drops - He reacts really badly to Advantage & Frontline & want him in the office when we try a different version of drops this time. In the meantime we have been doing baths & lots of cleaning plus multiple loads of laundry. Except for Puddy & Sasquatch who are refusing to be bathed. So far I have a full paws worth of scratch marks in the middle of my back, witnessed teleportation & miraculous feats of levitation, and need to replace the shredded shower curtain.