When it's mostly just wood dust, it often ends up as garden mulch to keep the weeds down. But this MDF dust has too much glue in it for our liking, so we bin it.

In the past month, we've emptied about 10X that quantity of dust and chips from the central shop dust collector. The bag in the photo is from a rather small shopvac dedicated to the biscuit (plate) joiner -- takes a heck of a lot of biscuit slots to produce that quantity. Not done yet, either..

Cheers