Tenant Peeing in the P-Trap

[Shari Gibson]

Okay team, I landlord from afar (I'm in TX and property is in MN). I received a call from my tenant that there was a "strong sewer smell" coming from the upstairs shower drain. I had a plumber go investigate it. He charged me $170 for a  2 hour visit and here are the notes from the invoice...

"------- Plumbing investigated a sewer gas smell in the upstairs bathroom.

We didn't find any smell in the attic or when we removed the trim from

the shower. The sewer smell is very strong in the shower area which may

indicate that someone has used the shower as a rest room."

The smell still exists, I'm out $170, and I'm not sure how to approach the topic with the tenant.

Any thoughts on how best to proceed? Should I do a pass-through on the charge? Thank you in advance for your thoughts.