First of all please send communications to them via regular mail with proof of mailing or certificate of mailing or by certified mail and of course, through the means expressly provided in the lease which is a contract.  And if the lease expires and you did not send them the new lease as provided in this lease, then they are going to stay and become a month to month tenant.  If you are scared to deal with them and want them out then you should hire an attorney ASAP.  It will be worth the money.  Also, your lease should allow you access in to the house by reasonable notice and in emergency.  And that includes work to be done on the outside.  Good luck.