Unwanted Traffic / Parking

[Spencer Hoogveld]

Hello BP Community, I have a question regarding one of my tenants: 

To give you some quick background info: 

- I inherited this tenant in my tri-plex that I bought about 6 months ago. 

- This tenant has kept the unit clean and she is on section 8 so the rent is always on time. 

- She's lived at the property for 5-years before I bought the property. 

- The lease ends in December of this year.  

Here is the challenge i'm facing:

This tenant allows A LOT of traffic at the property. All throughout the day, random cars pull up to hangout. I'm not sure if she even knows most of these people, but she's set a precedent that her house is a spot to drop by whenever. This tenant does not have a working car, but claims that the broken car in her spot was given to her (which has been sitting there for 4-5 months). When these people pull in, they take up the other tenants parking spaces. I've confronted some of these people and asked them to move their cars on several occasions, but there are too many to keep up. Also I don't want to put my other tenants in a position to ask for people to move their cars since it's a burden and could lead to an altercation. 

Do I have any rights to have these cars towed if this continues?  Based on the info that I've outlined, would you renew the lease?

Thanks in advance for your suggestions!