I would make it look like I left the house while actually hiding out inside. When he came in I would shoot him. It is completely unacceptable to enter your home as you say he does, he is chancing his life.

If for some strange reason you are not going to do the right thing and shoot the intruder, at least do everything else that you can to stop him. Cameras could be found for cheap, record him and call the police.

Are you serious about this accusation? Your landlord is breaking in to steal from your fridge when you are not home?

To the OP, I haven't done an in-depth search of PA code but found a few references that PA does not specifically spell out 'right to enter'. But if you LL is entering whenever and raiding your fridge, yeah, he's way out of line. If you go to Atty General's web site on renting there is a toll free # for consumers at the bottom. Check with them.

To the OP, I don't know what happened, but I just checked my link above and it's incorrect. I can't direct link to PA Atty General's page on LL/Tenant issues for some reason. If you copy and paste the address below into your browser it should get you there:

http://www.attorneygeneral.gov/consumers.aspx?id=405

Here is a quote from the bottom of that page for that toll free # I was referring to:
If you have a problem or a dispute with a landlord or any other business, you can call the Attorney General's Bureau of Consumer Protection at 1-800-441-2555, or you can also file an online complaint.

Here is the page for filing an online complaint:
http://www.attorneygeneral.gov/complaints.aspx?id=451

Here's a bit from Univ of Pittsburgh's off-campus living guide, "Tenant's Rights":

"The Pennsylvania Landlord-Tenant Law is unique but similar to other states' laws. You don’t have to be a lawyer to understand the law, but a lawyer may be helpful in asserting your rights or protecting you from abuse....Quiet enjoyment is the right to peaceful possession of the property you leased. Generally, a landlord cannot interfere with your possession and use of the property by harassing you in person or by telephone or by entering or allowing others to enter your apartment without reasonable notice and for legitimate purpose such as repairs, emergencies, or showing the apartment to prospective tenants. In addition, a landlord cannot withhold utilities or deny access by changing the locks. If a landlord does these things, you should advise him or her of your concerns in writing and in person. If the condition continues, you may complain to governmental authorities or seek court action to prohibit the action or to terminate the lease agreement.

Under NO circumstances can your landlord just walk into your home and eat from your fridge, not in any state.

For the last time, hide out and wait, when he comes in, SHOOT HIM.