I use the crumb type, at least it sure doesn't look like a crystal to me. The capsules when broken are more grease that doesn't like to go into suspension and coats everything. I put my LGO and whatever other oils in a coke bottle and put in a couple tablespoons of the crumbs and fill half full with syrup and shake the bejesus out of it. Then I encorporate it into my buckets of feed. Not saying it is th only way but My wife wants a new blender that doesn't smell like wintergreen already.