So, first thing is first, you've addressed the pest issue, now it's time to hire a professional, serve notices to the tenants and (at least in NC) they cannot refuse treatment, they will be responsible for the bill.

If I were in the business of selling briefcases filled with drugs instead of selling drugs, am I still a drug dealer?

Colton Joseph A multimember LLC has a default tax treatment as a partnership.

The Scorp tax treatment Can eliminate some of it though....after a "reasonable" salary amount (up for debate, but maybe $20-40k/yr) which would be subject to the 15.3%, the Balance of any profits could be taken as Profits subject to only ordinary income tax.

Had a drug dealer with kids and dogs.  

A "Termite Report" in this area of California often refers to a complete home inspection done by the seller, not a "termite treatment."

If they are paint, etc I would just wait the few months out and let the lease end, but is they are products made to make weed oil (butane,etc) or even worse drugs then I would get them out of there before they blew the place up.

Does it change the tax treatment? 

😝I suppose that’s what happens in drug-laden areas (seriously like half the Poconos is addicted to either meth or opioids or both.

Many of the city’s problems are interwoven; poverty, homelessness, and drug addiction are likely drivers of the property damage crimes that we experience at significantly higher rates than other comparable cities.