I live with a couple under my uncles home he owns it. I moved them in without signing a contract or nothing?

I moved them in myself with my uncles approval hoping for the best. But time went by and they began to show their true colors. They are disgusting they dont clean unless it benefits them, she quit her job to sell diet pills and she was selling them at a third parties house before but she started her "business" in my uncles place and even put signs up in front of my house. both my uncle and i told her she cant do that she took the signs down but still is selling at my house because she said that she pays rent. Its 2 Bedroom home not apartment and they only pay $500 where else can they get a better deal so for her to say that is ridiciculous. my toilet recently began to leak i called a plumber who said that he found a lot of feminine products down there that could only belong to her seeing as since she is the only female living there. she denied it. they apparently pay the rent every month but when it comes to the utltilties that i pay they are either late or if they pay me on time they pay me on the day of the due date at night. By that time i already paid them with my own money. most of these bills are under my name so i like to make sure i pay them on before the due date. they are not clean and they are driving me crazy. My uncle told them they had 30 days to move out when he confronted them about them selling of their pills it was a verbal notice. she said she needed more time and its been more than 30 days and she is still there with no sign of looking to move out. I Decided to get a 30 day notice have my uncle sign it and give it to them asap. He will gladly sign it cause he does not care for them much. My question is whether i am in the right to kick them out whenever i or my uncle wants even though they pay the rent on time. Not the bills but the rent. I ume my uncle can cause its his house and they never signed any contract with him. I cant stand living with them no more they are stressing me out like crazy.. Please help!!!!!!