We had to remove our carpet downstairs after my DH transplant and put in ceramic tile. The reasoning from the staff at the hospital, you don't know what's living in the carpet that the cleaners don't remove, also all the dust and allergens. Remember all the dust that collects under the bed and furniture? The only reason we still have carpet upstairs is he doesn't go up there and it keeps the noise level down when grandkids are up there.