4. When carrying on commercial activities involving animals, such as a breeding or raising operation or dog sledding activities, in a pet shop or an animal boarding establishment, or on premises where domestic companion animals are taken in for the purpose of transferring them to a new place of custody, euthanizing them or having them euthanized by a third person, the owner or custodian of an animal must comply with the following requirements, which are added to the requirements provided for in section 3:(1) the place of custody and the equipment must be easy to clean and disinfect;
(2) floors and the lower portions of walls, interior enclosures and cages with which an animal may come into contact must be made of non-porous materials.