: This is the most controversial method due to safety risks. Outdoor cats face dangers from traffic, predators, and infectious diseases like FeLV or FIV.
You can actually train most cats to use a standard human toilet.
: Many owners use catios (enclosed outdoor patios) or secure fencing systems to give cats a taste of the outdoors safely, though this usually still requires a litter box indoors for nighttime or primary use. Option 2: The "Human" Path (Toilet Training)