Tried 'em a few months ago, thinking that Colgate was prob. exaggerating with the "one-use" thing, and I could use one several times. They weren't--I'm not even sure they're good for that much. The "toothpaste" is like a weird little piece of toothpaste-flavored hard candy, and the bristles are a soft plastic that mash out to nothing in a couple seconds. The toothpick end might work okay, but 2 grams is a little heavy for a toothpick.
If you had better luck, Kevin, I salute you.
PS where'd you get the prison brush?