I've not tried this myself, but a guy on my local reef forum tried this and now swears his allegience has shifted from Joe's Juice to this product, Blue Life Aiptasia Control.
Aiptasia Control: Blue Life USA
He posted, "This is a new "Joe's" alternative. Joe's has always been my product of choice for aiptasia killing, but it leave a little to want for with Mojanos so I figured I'd give this stuff a try.
"The product looks and is used exactly the same way. I've just tested it for the 1st time on a patch of 7 or 8 Mojano that have been zapped with Joe's half a dozen times.
"1st report is that it has killed most of the Mojano DEAD and GONE! 2 have retreated into the rock and I can't tell how they are doing and the last (and trickiest) who is on the glass and got a smaller dose looks VERY upset. Will update soon when I know the final outcome.
"So far I like it."
Later, he reported that the two majano that had retreated into the rock were, in fact, dead, and that the one on the glass was in very bad shape.