If it is an ex boyfriend or he is showing up unwanted by the the tenant it might just be classified as vandalism, because at that point the tenant has no control over the boyfriend.

Updating your description in the rental listing can help to deter unwanted partiers and make it clear it's a quiet/family neighborhood. 

(The law applies to txt messages as well.)https://www.fcc.gov/consumers/guides/stop-unwanted-calls-texts-and-faxes

I'm wanting to start a direct mail campaign that's targeting investors in my area that might be wanting to offload unwanted properties. 

My main search is constantly talking with people/organisations to see if creative financing in any way is possible, but most of the time being disappointed that it is not the case while in other countries like the US or the UK it is the most common thing to do.

My understanding is that you need to organise for a lead clearance report, a Certificate of Compliance (valid only for one year) and then a Certificate of Registration. 

Did you have unwanted guests at property?

Is there a good way to do this so that they cannot try to stay even if they are unwanted ?

October: Mid October I paid for her 1st moth rent to just get her out as she was about to receive $0 from me but not be out of the house.November: She leaves the unit but leaves all her trash and unwanted furniture.

That seems great to me as it weeds out the people who really want the place but it also seems to me, how do I say this....scummy and would create a bad rep for your properties not to mention unwanted inquires with fair housing laws.