Consider opening the door when you shower to let all the mold-feeding steam to escape.

Just follow everyone else's advise on this feed and you should be ok.

And they will also feed the feral cats in the area, and let them inside.  

I choose not to feed him.

Inspect for signs of animals, like pet feed, and if you are not sure simply keep an eye on the place at random times of the day.

It seems like you have an abundance of nosy neighbors to feed you all the information you need if you so desire.

IMHO, stop feeding the entitlement mentality.

Rent is probably not going to replace feeding her children (nor should it) on her priority chain, but it should be more important than the electricity bill or car payment, let alone discretionary spending like eating out or going on vacation.You'll find a lot more satisfaction in the rental game if you treat it with a modicum of compassion, rather than being the Dickensian monster that many people think of when they hear the word "landlord". 

I'm closing on a 1900 five-family with a relatively new oil boiler feeding a steam system.

That will not happen as this Ontario welfare recipient has proven beyond a doubt he is a common bottom feeding criminal.