Tenant rent past due, no one living in home

[Susan Fromm]

This is in Pennsylvania. I have a rental next door (and this is the only rental I have). A few months ago the tenant announced that he was "working as a truck driver and you won't see me much". He has lived there over 2 years with a one year lease that has renewed itself. The utilities are set to automatically go back to me when a tenant leaves. So far that hasn't happened. I haven't seen the tenant for a month and now rent for April is 30 days past due and May rent is 3 days past due. His cell phone number reports "no longer in service". His alternate contact also does too.

The lease says The tenant is in default if rent is not paid when due. then one of the terms in the event of default says:

"B. Landlord may cancel the Lease by giving Tenant a written three day notice stating the date the term will end. On that date the term and Tenant's rights in this Lease automatically end and Tenant must leave the premises and give Landlord the keys. Tenant continues to be responsible for rent, expenses, damages and losses."

Since I can't personally give the notice I assume I could send a certified letter even though he isn't there.

My question is that all I need to do? Do I need to go to the magistrate?

I ask that mostly because the last time I did for an issue to get a bill paid they gave a date that was over two months out and said that was usual because of staffing.