Do I have an issue with my tenants or am I just to protective?

[Scot Sorenson]

Let me start by saying I lived in this house for 7 years and it was the first and only property I have owned.  It's in Minnesota and I moved to Colorado.  I have a property manager looking over it.  4 girls moved into my rental property.  a few months after they moved in one of my neighbors had been over there talking to them and found out that one of there boyfriends moved in. Talked to my property manager, he didn't seem to think it was a big deal and said he advised we deal with it come lease renewal.  But told the girls it was a violation of there lease.  A few months after that they asked if they could get another dog (they already had a dog and a cat).  I said yes but they would need to put down a dog deposit. They ended up not getting the dog.  Now my father in law was over there trimming bushes.  He sent me a picture of 2 cats sitting in the window (he wasn't trying to rat he just thought it was cute).  They are only suppose to have 1.  I was also notified by the neighbors they parked in the lawn all winter and kind of messed up the yard.  Every time I bring any of these issues up to my property manager he just tells me he doesn't think its a big deal and that we can deal with it at renewal.      Now these tenants pay on time every month and I have had zero issues getting rent.  So am I just being to protective because I'm attached to this property or am I kind of being walked all over?  Please let me know what the BP nation thinks.  Thank you in advance for any advice.