harvesting...

i recently acquired a worm bin. but don't really know whent to harvest. the worms are working their way towards the top, the stuff looks like coffee grounds, but there is still debris in there? i am guessing it's time?

Answer from BigTex Worms

I answer this question my page about castings/harvesting. I also have a video on how to tell when its time to harvest click here for page on harvesting
Hope this helps,
Liz
BigTex Worms