I've had a lot of roommates who did this. What I did was literally let ALL of them pile up, fuck it, if I'm done with them, I throw em in the sink like I dont give a fuck just like them, and then I wash what I need to use. Thats it. Dont do them all, and if they do them all, dont do it back.

Its petty, but eventually they will bring it up and then you will see them commit, otherwise if you play maid its game over. Sort of like a druggy wanting to be clean. You cant force them until they want to be clean, until then fuck it.

It will suck for a bit, especially if the dishes are left unrinsed and the food bits are crusty af, I know, but so far I have had a 100% success rate with even the most pathetic roomies. They will give in eventually