Bacillus thuringiensis/BT Orchard Sprays – Philadelphia Orchard Project
Amazon.com: Bonide Captain Jack's Thuricide BT, 128 oz Ready-to-Use with Sprayer, Kills Worms and Caterpillars in Home Garden, For Organic Gardening : Patio, Lawn & Garden
Caterpillar Killer Spray with Bt (16 oz)
CATERPILLAR KILLER SPRAY WITH BT CONCENTRATE - Rail City Garden Center