I noticed alot of people posting about hairball problems recently. I was wondering about retrofitting the tubes that the little fur monkeys play in. Attach a brush at the ends so as they run in and out of the tubes they would be "groomed" so to speak. Not to replace brushing, just to add to it. But, I am not equipped with a brilliant enough mind to figure out how to do it. Can't think of an object with a line of soft bristles that we could turn into a circle and attach to the inside of the opening of the tube. Any ideas? Thanks, Mary Jo with half a plan! [Posted in FML issue 3981]