Harrell's 2026 Agronomic Resource Guide - TEST

White Grubs, Billbugs, and Caterpillars 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

When adult beetles are seen (usually May 1 st - June 15 th ) A second application may be needed if additional generations occur in your area

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

Follow all label directions and local recommendations

June 2025

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