I haven't had the same experience with repashy - my fish are just so-so with it. They don't go crazy over it like people report. I've tried 4 different kinds and they will eat it, but rather slowly. It's hard for me to tell if everyone is getting some and hard to judge how much I should be putting in each tank. I will continue to toss some in from time to time, but it's not one I use regularly.

For RiversGirl, there is an odor but I don't find it overpowering and it doesn't linger much at all. The repashy sets as a gel pretty fast and I put it in a covered container in the fridge. There is no smell escaping in the fridge either.