Keep your wild bird feeder healthy and mold-free with Feeder Fresh bird-safe moisture trap and seed preservative. The easy way to a clean and healthy feeder. Fights rain, condensation leaks and keeps seed fresh. For all seed and feeder types. Safe for birds! Feeder Fresh is made from sand, just very absorbent. The composition of Feeder Fresh is non-toxic and is approved as an additive for animal feed. In fact, the essential elements of Feeder Fresh are already consumed by wild birds. Does not contain crystalline silica. Avoid mold from the start by using Feeder Fresh. By Sapphire Labs.