How can I effectively stop cats from peeing on the carpet?

To effectively stop cats from peeing on the carpet, try the following steps:

1. Clean the affected area thoroughly with an enzymatic cleaner to remove any lingering scent that may attract the cat to pee there again.
2. Provide multiple litter boxes in different locations and keep them clean.
3. Ensure the litter box is in a quiet and accessible location.
4. Consider using pheromone diffusers or sprays to help reduce stress in the cat.
5. Consult with a veterinarian to rule out any medical issues that may be causing the behavior.