So I had a half used old bag of DE I took out of the storage bin yesterday to charge the filter and just as I cleared the bin the bottom of the sack let go. I had probably 25 lbs of DE on the ground in a pile so I scooped up what I needed for the filter, leaving quite a good pile still on the ground. So what's the best way to get rid of it? Scoop up some more to use, or discard, and then just wash the rest into the yard? I don't know if there are toxicity issues here. Thanks....on my way to the store to buy a plastic bin for the next bag.