Spectracide Triazicide Acre Plus Insect Killer For Lawns Granules, 35.2-Pound KILLS LAWN INSECTS: Use outdoors on lawns and as a band treatment around your house foundation. ACRE PLUS: Treats up to 44,000 square feet of lawn. KILLS ON CONTACT: Treat when insects first appear or when you notice lawn damage. CONTROLS GRUBS: Treat any time between late July and early October. GRANULAR FORMULA: Distribute granules uniformly around the treatment area; water in lightly immediately after application.