I am not going to clean up after my disgusting housemates.
Are the bad people to clean up after?
It makes me sick to think about what they do in this house.
If your housemates cause a mess then they should be the ones to clean it up. You're not expected to clean after grown adults.
I'm sick of cleaning their mess but I don't want to do it by myself.
You should not have to do it by yourself. They should be the ones to clean it, and it makes sense that you give them attitude for not holding up their part. They should clean up what they leave out.