What’s the best way to kill grubs?

Grubs are the larvae of the May and June beetles. Retired UT Extension Agent Mike Dennison says there is an economic threshold to treating for grubs – a few grubs won’t create enough damage to justify the expense of treatment. The threshold is 5-10 per square foot. There are a number of treatment options available including Grub-X (imidacloprid), trichlorfon, beta-cyfluthrin, and chlorantraniliprole. There are also milky spore and nematodes available as an organic option. In Mike’s 30-year career as an extension agent he only saw two cases where grub treatment was warranted.

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