I'll probably start by seing if the Habitat for Humanity Re-Store has a match. 

Also, if there are cats still around then you will need to partner up with the local SPCA to have them removed humanely.

My first assumption remains the same.When I make mistakes and I do being human, I admit them, this is not necessarily one of them, I understand your point (and perhaps your motivation) but without more information by the OP, I'll stick to my suggestion.

I am not a marriage councilor, a quick cash business, bank, humane society etc etc.I say all this to make the point------- Have a lease    Stick to it       Be firm     Don't make concessions     It's an agreement/contract       Hold them accountable     They are an adult      Don't accept a reduced rent because you feel bad for them - this is a business not a charity.Because you accepted some sort of payment of rent you may not be able to count this month as violating the lease on the rent amount - you will have to check state and local laws.On the pet provision that was broken, you should be able to give them a 30 day vacate notice for violating the lease agreement.

We are fortunate to have an human resource infrastructure to be able to do this efficiently.  

Because the underlying factor involved with investing money is human behavior.  

Effective, sustainable, profitable, and delivers the optimal return on your time, skill, and money.One of my favorite Warren Buffett quotes, "Price is what you pay, value is what you receive".The investors I know that are most successful and who I most want to emulate, challenge me to focus on asking more powerful questions that will likely lead to more powerful answers.Here are some resources and areas of study that I have found to be extremely valuable.1) Public libraries & especially law libraries (nudge nudge wink wink) contract law, real estate cases and guide books that are state specific.2) Understanding title 3) Public record searching4) Studying marketing and human behavior: What influences people to say yes or no?

I think it's human nature to want to put our mark on things when we first get them so make sure it's not you wanting to do it just to do it. 

Try to listen to as many BP podcasts as humanly possible.

If you're looking for volunteer opportunities, Habitat for Humanity may be there.