I am currently working on putting in a basement bathroom. Have a 4 inch drain pipe roughed in, which at it's location is the toilet. Put a camera down to see the condition of the pipe and about 12 feet from the opening is a piece of cinder block. The piece itself is fairly small, about the size of a 2 liter bottle cap. I tried using a vacuum to get the piece out, to no avail. Any suggestions short of tearing the slab up to get it out?
Can I just leave it?