Thought I would add this here too. I put it on the dyi page also. I use sand in my coop and the kitty litter scoop was getting old so I did this!
I found a small drill bit and a bucket with a handle. It took about 10 minutes to make all the holes. Then I rake and sweep all my coop sand into a pile, shovel it into the bucket (I have only tried filling it about 3 inches at a time ) and shake the bucket ,clean sand falls out and all the yucky stays in the bucket I just dump that into compost. Works for me!