And if a cat is using the sandbox for a toilet, then the kids don’t need to get anywhere near it. There is a variety of illnesses that can be lurking.
I have never known a cat to only urinate in a sandbox. They just bury the “other” business. Then children find these little hard nuggets while playing in the sand... ugh...
Yeah...I find those smelly little nuggets in my flower beds and veggie garden! I’ve even had neighbors try to justify it as “fertilizer” but you DON’T put meat eater’s poo in your compost or gardens. I’d rather have the good bullsh*t :D