Q. I came home from a vacation to find several (small) urine marks on my comforter sheet. The cats (3) had access to the room. Why did they pee on it?
A. There may be a medical cause or it could be behavioral in nature. Have them examined by your vet to rule out medical causes such as UTI. Once that has been done, you can focus on the behavioral aspects such as substrate preference or even stress/anxiety due to your absence. Some cats urinate on the bed simply because it smells like their owners. Others have a lapse in litterbox training. The simplest solution is to not allow the cats on the bed in your absence. Make sure the bed is kept clean. Since you have multiple cats, the general rule of thumb is to have a litterbox for each cat in the house plus an additional litterbox. Try litterbox attractants when you travel. Search www.pet360.com for options. If your cats stress or become anxious in your absence, calming pheromone collars or sprays may be effective in preventing future accidents.