A couple of weeks, depending on the quality of the bud.. but you really don't need the thing to be full.. unless if you are just trying to save it. What I did was after every time that I grinded, I would put the keif into a jar. After the jar was full, I would smoke bowls with some of that keif on the top.. and generally get high as fuck.

Yes, it is an excellent product.
Hempamasta Reviewed by Hempamasta on . space case grinder with a keefe catcher i just bought a space case grinder with a keefe catcher, and i havent used mine yet, but i wanted to know what any of you follow tokers, that have it or have used them before opinions on them? Rating: 5