If she has had them for a long time and you did nothing about the situation found during regular inspections then you are likely out of luck since you did not give her any prior warnings.

You'll be warning other landlords that she's a bad tenant, and - who knows - maybe one day she'll want/need it off her credit report and decide to pay you off. 

yup I googled them and they are a licensed consumer finance lender in OR WA CA NV  and they have a big warning on the front of their website saying if anyone is claiming to be with their company and ask for one dime up front to call the AG in Oregon and the AG in the state you live in and file a complaint.. 

(That’s a Warning Sign.)By MATTHEW GOLDSTEIN, ROBERT GEBELOFF, ROSS MANTLE and MATT RUBYSEPT. 12, 2018This quiet working-class town, just beyond the glitz of the Las Vegas Strip, helped spark the global financial crisis 10 years ago.

Plus, it'll warn other landlords about them being bad tenants, and - who knows - maybe some day they'll need/want to pay you off to get it off their credit report. 

Sometimes you have to be stern. 

If you're going to warn me not to fry myself, thanks, but I already knew that.

Since your lease includes a clause about keeping outside areas clean of debris and belongings, I'd give them written warning with 30 days to comply.  

I'm not as young as you likely think I am, but thanks for the warning...

Police have warned me that even though he has not applied or signed a lease, he could have substantial rights.