I vacuum half of it and inhale the rest. Seriously, I did use it with compost some years ago, but I quit with the composting (lazy in my old age) and I use a bio clip mower for the lawn which keeps it fed and green, so I don’t even have grass clippings to compost anymore. I bag up my sawdust and deliver it to the recycling senter where it is composted and then made available to the public for free. Also Manitario is correct about raw sawdust being a nitrogen sink which doesn’t help the plants, but it can help keep the weeds down and also acts as a mulch.
Mike, an American living in Norway