Oh, and one more thing. Does anyone else use bleach in the sand box? I spend a good deal of time in the spring (2+ hrs) with the garden hose and diluting attachment with bleach spraying the sandbox. Mine is a 14'x16' hole in the ground filled with sand. I'm in the country and there's lots of creatures around at night. Plus I have a cat (that's her to the left.) And even though I think I finally figured out the perfect way to keep the sand useable all summer, I still wonder what could possibly be in there.