When I use it mate, I pour about a gram on a clean surface, dinner plates work well. then I take each cut, wet the end in clean filtered water about pH6.7 mine is, I then roll the cut in the root better until its well covered, you just need to get a bit on, as you might using say Clonex. If I pre soak my plugs, I tend to go for about 1/5g per plug tops so on 16 I would use a max 2.5g mixed in to the L and them soak the plugs before planting up asap with the cuts. I think the wet and roll is more cost effective, but I haven't tried the cloner and doubt there would be much in it in terms of total weight of RB used, i will grab one, a cloner i mean, from Ben so i can run it and help out mate if needed.