I have a bathtub completely built in the apartment after the previous owners. There are tiles around and below it. Someone probably didn't think they'd want to clean up the trash once in a while. Well, the bathtub is clogged and the bell doesn't help, there will probably be a lot of tangled hair, etc. But without digging I won't get to the cleaned waste pipe. Do I still have any way to clean the waste under the tub?