"House soiling" refers to a situation where a pet, usually a cat or dog, urinates or defecates inside the house instead of using the designated areas such as a litter box or outdoor space. Full definition
If your dog consistently house soils in one area try feeding him there or keep his water bowl there. (siriusdog.com)
The most common causes are a medical problem and stress, which is why cats that house soil need veterinary care. (tampabayvets.net)
Please see our article on Medical Causes of House Soiling in Cats for a detailed overview of medical problems that can cause or contribute to litter box issues. (petenrichments.com)