Water Retaining Crystals
I used these for the first time and then googled them and wish I hadn't. Right on the package it warns you that they are dangerous to the environment. Although non-toxic initially, they break down into a lethal neurotoxin. Sure, by the time we are through with our hanging baskets, they won't have broken down yet...but then what? You have to dispose of them somehow. They will eventually reach a waterway. Also... the research I've seen shows they may not even be effective for the use we want them for. It's odd. Lots of "Green" sites recommend them to save water but I think these sites are written by people without a good understanding of their subject and just go for easy "tips." Even without the "lethal neurotoxin" part... we are clearly adding a form of plastic to the environment/landfill/waterways.