I had never given this idea much thought but I have a buddy down the street with a water garden/green house that I found out today he throws about 50 lbs of these a month in the dumpster. Needless to say, I'm trying to figure out what type of containment will work best for me. I don't have a protected dock area-yet-so not sure how well I can contain them with the winds I'm subjected to fairly frequently. We shall see. Edit: I asked him if I could come get a few and when I got there he had 5-5gal buckets full.. %-))