Medicap Acecap AC12X5 Systemic Insecticide Tree Implant, Pack of 5 ACECAP Systemic Tree Implants 98.9% Ace hate 5 Pack 12ea Easy to use systemic insecticide implants for control of destructive pests of ornamental trees Applied in spring, the treatment will provide season-long control of many insects, including Aphids, Bagworms, Borers, Budworms, California Oak worm, Cankerworm, Case bearer, Elm Leaf Beetle, Gypsy Moth etc. The sap flow dissolves the chemical and carries it throughout the tree in 4 to 5 days. Ten implants will effectively treat up to a 14" trunk diameter Systemic insecticide tree implants Contains 99 percent acephate, a highly effective systemic insecticide for broad spectrum insect control Acecaps are registered for use against aphids, bagworms, bronze birch borer, gypsy moth, tent caterpillar, wooly adelgid, and many more Easy to install; 10 implants per pack 3/8-inch diameter implant