Styrofoam in black/grey tanks

[BMFLYFISH]

Pieces of styrofoam are coming out the waste tanks when I am draining them. I think it's coming out of grey tank but I can't be certain. Is it a baffle of some sort? Should there be a concern?

[DK-in-SC]

No worries. It is just some leftover construction debris from when the RV was manufactured. Mine did the same thing the first few times I dumped the tanks, but now only the usual stuff comes out. When FR is constructing the RV and drilling/cutting through the floor and walls, some of the campers insulation material falls into the drains/tanks.

[BMFLYFISH]

That makes since, thanks for the reply.