Lunker,
I believe you are mistaken that all liquid 2, 4-d is banned by the EPA. WEEDAR 64 has an EPA Registry # 71368-1 AND an Aquatic use label. Of course, like I said before, you have to check-out your states' regulations to see if its approved for use in your state. As for me up here in good ole' Pennsylvania and Delaware, I will keep on using it instead of Sonar, AquaKleen, and Navigate and save lots o' money for my clients.
Harry