 This is exactly why products easy on beneficials are becoming more popular. This includes Transform and Safina, which are great on soybean aphids, Vanticor that's excellent on grasshoppers and many worm species, and Steward that we've been using for alfalfa weevil larvae and adult corn rootworm beetles. Unfortunately, all these products cost between $7 and $15, where the cheapest pyrethroids like Silencer only cost $2. Plus, Silencer is far more broad-spectrum.