I would suggest making a big batch, its a major pain in the ass anyway applying a TD ...2x a day. Grinding the a small application up would make it worse.
I guess you could get away with 1 times a day but if you are doing Test Base with it, it probably isn't such a good option.
I also noticed that no matter how fine you grind up the pellets with mortar an pestle the compound still feels gritty when you apply it, if the compound has been just mixed.
I find that if you let it sit for a couple days it will be very consistent and leave no residue (i.e. it goes in the skin)