Mine that is--- I use the factory 360 and I have 6 trays going. Two or three years ago I made a sifter out of 2x4 and 1/4" hardware cloth. It is about 2' x 3' and at harvest time I place it over my wheel barrow sift my casting thru it by hand. I used to take the time to pick out any worms after sifting, but not anymore . Now I rake it all up by hand some of the left over castings and the worms put it in a coffee cup then back into my system. If there is any worms left over dump it and the few worms around my rose bush which happens to be the nearest plant. Anyway this saves me so much time in the process. My latest harvest in a 5 gal bucket.