If your cats shed everyplace they lay down, it could be their diet. I have a white cat and very seldom do I have cat hair on anything. I asked my vet about excessive shedding and the new intern vet who was in the office told me to change the cat's diet. The food she recommended was Blue. I brush my cat every day using a Furminator and have noticed a big decrease in hair that is brushed out since I changed his food. Cats will shed and sweat automatically when stressed. I switched my dog's food to Blue and have noticed a big difference in her coat, eyes, and her shedding problem is not a problem anymore. Pets do not need grain or filler in their diet.