I have a tenant that the lease is up and the end of the month. 2 months ago we were told that they had surgery and was not interested in mowing the lawn which was part of the lease agreement. At the begining of the month we contacted them with the new lease amount and told them that we would be sending a new lease in the mail. Yesterday we received a call from them that they had a plumbing issue. When my husband arrived they proceeded to take him around the house telling him that little things that needed to be repaired. No screen in window, toliet does not flush unless you hold handle, door sticks etc. They were very nasty and made my husband feel uncomfortable. He fixed the plumbing issue and told them that he was going away for the weekend and that we would contact them next week. They said that they were not comfortable there because the neighbor has had a disagreement with us and they feel like they are in the middle and that they do a lot around the house and do not agree to the new lease amount. Since then my husband and I talked and decided that they never return our calls unless they need something and are always disrespectful everytime we see them and we are not interested in renewing their lease. Can I send them a letter at this time telling them that we are not renewing the lease and we are giving them 60 days to move out or do I have to renew the lease since I sent them one already.