I generally have a lease and a set of "house rules" to deal with parties, drugs, alcohol, etc.I guess in the end, treat them no differently than any other tenants. 

He is an alcoholic and a hoarder and doesn't work as he suffers from depression.

Two plusses are lower energy consumption and less frequent replacement of bulbs due to longer life; the minus is the higher cost of these bulbs.

I also suggested to HOA "no littering signs" & to put fines for no littering in the newletter.Also, there's one unit that consistently throws their empty alcohol bottles on the grass (last weekend was brandy; week before a smashed bottle of tequila).Is there any other suggestions you may have?

( all 3 of my sisters tried the sharing an apt when they were young NONE worked , boyfriends , decorating , etc)Wait for a retired alcoholic , on social security , as long as there is booze they dont complain

It's very similar to the prohibition of alcohol.  

I went to Home Depot and got DE and put it along the baseboards in the room and in the carpet but this was after I sprayed everything with alcohol (dried them out).

@Kevin Page  is absolutely right.Story for your consumption: Local cafe owner that I know personally had an Iraq vet come in with his 'service dog' (I'm also a vet so I have absolutely no resentment toward him for this...generally I would be bias toward his point of view).

If you are considering real estate investment, then you may want to consider looking at other parts of the country as well.I view 'where you live' as a consumption activity.

Once we hit our target cashflow we will likely increase our donations and consumption to around 25% each.