Kicking on the door and/or adjacent window until a tenant or resident drug dealer opens the door for you was pretty much the only way to gain access.

I wouldn't worry about it, unless it seemed like something else weird was going on - like you though it was just a place to manufacture drugs or something.

My neighbors said they are 99% sure there is some sort of drug operation that the tenants are doing out of my house in Hawaii.

Even though I wanted her to stay because she paid on time, I found her to be very demanding (she did all sorts of bizarre things like claim the neighbors were drug dealers, stalking their activities, hassling others in the community, continuous repairs - I have other properties and no one is as high maintenance as her) and I was upset at the state of my newly rehabbed place.

You want to know the process going in when the tenant is selling drugs, not complying w/ the lease, abandonment, non-payment, etc. 

No one is on a lease it is a self run sober living home for people recovering from drug and alcohol addiction.

Find out she has a serious drug conviction and tell tenant she doesn't meet standards and she must go.

From my own experience, if I simply stick to these items and know nothing else, I manage an excellent batting average when it comes to tenant selection.First off, if ANY of the adults who will be on the lease have evictions or violent or drug related criminal convictions, I reject the entire group/family.

There is also a page they sign that says they are out in 24 hours if there is any drug activity, and another stating if they want to grow their own medical marijuana (legal here) then they have to get their own liability insurance.Things I added include that the tenant is responsible for replacing light bulbs within their unit, they are responsible for clogged drains and my use drano, replacing a missing smoke detector will be $50, no flushing things other than human waste and toilet paper- no flushable wipes specifically.  

The guy who has a drug possession charge from a few years back that he pled no contest to because he couldn't afford bail and needed to get out of jail to get back to his minimum wage job to support his kids, he has a good chance of being fine.