Hi All: I found this strainer/colander for a frying pan at Bed, Bath & Beyond. It works beautifully for sifting out the poop and gunk from the sand in my run. I just place it over the top of a bucket and sift the sand through it. The holes seem to be a perfect size to keep the poop in the sifter but allows the sand and the tiny rocks to fall back through. The kitty litter scooper just wasn't doing the trick. I had also tried different sizes of hardware clothes but the holes were not the right size either. I thought I would share this nifty tool...