Re: Sims 4 Sims won't use the toilet

I take it you have checked that there is nothing blocking the toilet.  Have your tried replacing the toilet or resetting it?

Are you using custom content?  Mods?

If so, a lot of mods and custom content need updating following the patch the other day.  You should remove your mods folder and see if that makes a difference.

If you don't use mods or custom content then perhaps you need to repair your game.