Also, make sure you understand whether each line is a bid/estimate or allowance and how eats costs for overages, and if you come in under, do you get that money returned. 

I have had two applicants say that they have service animals.

They will screen the tenant’s animals and give you a risk score - similar to what we do with our tenants.  

Every month, when he got the chargeback billing, about $15.00 he would rave about his wife and him eats take out food, no time to cook, and his landlord has a large family, constantly cooks, and have people over for dinner.

You want your cake and eat it too!

They will eat the overage. 

Plumber might be able to find a smoking gun when he snakes the line but otherwise it might be hard to prove tenant caused it and you'll just have to eat the repair cost.

We see on social media how "our" money(reduced rent)  that was supposed to be saved up for them to buy a house, spent on vacations, eating out etc.  

But if they accuse me of fraud, attorney fees could eat the  $1,400 quickly. 

Old carpet backing can cause this kind of blackening and some darkening can be caused by animal pee.