My exterminator recommends:1) spraying the apt and outside a few times (3-4 times)2) pulling the appliances out of the unit and spraying the exterior with a can of raid, especially the back of frig, until you empty your can of raid (1 per appliance).

Then there is Lexington ave, where I was caught up in a drug raid several years ago while knocking on doors.

Lots of questions to on the DC real estate commission, DC guaranty fund, DC grievance process.Also be aware that the DC mayor is proposing raiding the DC guaranty fund. 

I can't say don't do that, however, you should consider a few things before raiding the 401k for down payment money, and maybe there are other options.

They have tried raid and everything else but the ants kept coming back. 

I have had stabbings raids shootings and murders at some of my properties.

First of all, the use is still technically illegal, which is why Toronto dispensaries are regularly raided by police, and they keep very little cash and product on the premises (they have multiple courier runs every day).1.

Not even after the SWAT raid. 

my experience is from a few decades ago and that was working for a syndicator as a land and project acquisition Broker although I was in their office I was still independent ( which turned out to be a great thing)Their issues were many but here is the short list.1. invested in Texas in older buildings new construction popped up next to them and raided their tenants  vacancy sky rocket and they could no longer debt service.2.

We only had 1 shooting and 2 drug raids on my block last year at the same building that always gets in trouble.