Harrell's 2026 Agronomic Resource Guide - TEST

White Grubs, Billbugs, Caterpillars, and Mites Envu’s latest insecticide, Durentis™, offers quick knockdown and long-term residual control of common golf course insect pests including white grubs and caterpillars. The active ingredient, chlorantraniliprole, has a small environmental footprint, with limited applicator and pollinator restrictions.

Target

Timing

Target Life Stage

Product

Billbugs are active throughout the growing season with multiple generations. For optimal control, apply when adults are first seen. Additional applications may be needed in areas of higher pressure, especially when turf growth slows in the shoulder season

Tetrino ® 32 fl. oz./A, Triple Crown ® 25-35 fl. oz./A, or Merit ® 0.4 lbs. ai./A (multiple formulations available including on fertilizer)

Billbugs

Larvae

Early season spring application (April - May)

Larvae

Durentis™ 4 fl. oz./A

White Grubs

Durentis™ 2.7 fl. oz./A or Merit 0.4 lbs. ai./A (multiple formulations available including on fertilizer)

Apply during peak adult activity (usually June - July)

Larvae

1.3 fl. oz./A for 60-day control 2.7 fl. oz./A for 90-day control 4 fl. oz./A for 120-day control Near the end of the season when no more generations expected

Durentis

When adults are first seen

Caterpillars

Larvae

Talstar ® 20 fl. oz./A or Triple Crown 25 fl. oz./A

Kontos ® 5 fl. oz./A or Triple Crown 25 fl. oz./A

Apply during shoulder seasons (Feb-Mar) and (Oct-Nov)

Bermudagrass mites

Nymphs and adults

Follow all label directions and local recommendations

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June 2025

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