My exterminator charges $60 for a preventative treatment and offers a 90 day warranty. 

The negatives , I can think of , You cant evict him easily , he is paid up .Drug dealers have money and not too good credit .Where did he get the money ?

i will donate 1 month rent when I kick out a sad case than letting a (drug, drama or both) addict sap my property, profits and pride.and always remember...the bank doesn't care about your story.

Bedbugs treatment does not last long and they are carried in by pets and people.

We don't know if it is domestic violence, drug trafficking, kidnapping, or murder.

@Fred Stevenson Being an "Active" investor vs. a "Real Estate Professional" does not affect the treatment of your real estate expenses.

I filed an emergency eviction which resulted in the sherrif escorting her off of the property the day after thanksgiving (6 day from file to eviction since I proved in court that she was a hazard to the property) I have little doubt she was homeless for the holiday and I have no regrets.I am not a monster, again please see my post "I like my tenants" if this post would lead you to believe I am a scumbag.The truth of the matter is I believe with 99.9% certainty that my tenant and her daughter and the gentlemen who were staying the night were using drugs/alcohol to the point that they could not identify a small problem for at least 12 hours.  

If we had known she was a drug addict, we never would have allowed her to rent the property and could have been saved thousands of dollars.

What can top a bunch of inbred, drunk and drug addicted child abusers who like to run naked in the rain down a busy city street?

Real Estate investments get a lot of special tax treatment.