Yeah, doors are fine unless you have a cat that can open them (in or out, carpet or hardwood). Doesn't do any good to put mine in a separate room. I have to lock the bathroom door so they don't join me in the tub. They also love the sewing machine action and I had to spend a lot of time teaching them to stay back from the needle when they were so curious and wanted to get up close and personal. A least now they keep their distance on the table. But they are sooooo spoiled, they can get away with almost anything. Be sure to let us see the design that your two miscreants came up with.