I rent out a residential duplex and had a tenant call me yesterday telling me they couldn't use their sink due to the trap being clogged. I was out of town at the time so I provided the tenant with money via a digital cash payment platform and told them step by step how to treat a trap clog.. they completed everything step by step with no success so I get there this morning and do a deep dive on their kitchen sink drain and it is full of food particles that are edible chunk size, a cottage cheese type fatty material and it's so compacted that it's going to require deep sneaking and possibly hydro jetting.. the tenant tells me they don't dump grease down the pipes but when I rented this property to them it was all new plumbing 8 yrs ago