Even though this is touted as environmentally safe and ok for organic gardening, it still works. It is basically soap salts with sulfur added. These fatty acid salts have been used in insecticides since 1947. They have very low toxicity to humans, as long as not ingested in large quantities and dissappears from the environment in less than a day.My wife and I use it on our rose bushes. Following the label, it put an end to the aphids, thrips, and japanese beetles feasting on the leaves. The old dish washing liquid mixed with water in a spray bottle can do the same thing but, it seems, not as effectively.The added sulfur is the fungicide. I routinely dust my plants with powdered sulfur. I actually prefer the spray, though, because the plants don't look, well, dusty. The safer brand is easy and convenient to use and effectively kills pests and inhibits plant damage caused by fungi.