I could not decide to throw them in the compost bin or as you suggested in your video, making briquettes.

Thanks for sharing the link Eric, this is the kind of thing I have been looking for, but as the spent coffee bags are fairly solid bound by the straw, is it worth trying to break them up? then mix with sugar/wax etc.

What do you do on the farm with those giant spent substrate bags?

• This reply was modified 9 years, 12 months ago by Piers Caswell.