I'm going to cut off my teenage son
What is your purpose for wanting to cut off your teenage son?
He doesn't help with the cleaning and he leaves trash everywhere.
It can be frustrating to live with a messy kid, but bear in mind that your child's behavior is the result of your parenting. Moreover, you're obligated to support your child until they are 18 years old, as until then they are unable to do most things for themselves. Instead of cutting your child off, take this time to try to instill good discipline and moral values in him.
Nah, I'm going to cut him off.
Well these are traits that need to be learned as a kid. If you want him to be more clean and neat than you need to discipline him to do that. You cutting him off is only ignoring the issue at hand.