Beat the Beetle!

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Help us Beat the Beetle!

The City of Grand Junction, Mesa County, and Colorado State University (CSU) Extension are teaming up to fight the Japanese Beetles- an invasive pest that feeds on more than 300 plants, including turfgrass. Our efforts are proving effective, but we need widespread support to make a significant impact on the beetle population.

The Japanese Beetle was first spotted in the Grand Junction area in 2022, and Mesa County declared the beetle a public nuisance in March 2023.


How can you help beat the beetle?

Mesa County and CSU Extension Tri-River Area are recommending insecticides with the active ingredient chlorantraniliprole to manage larvae of Japanese Beetle in turfgrass, these include

  • GrubEx which are animal and people safe and can be purchased at local nurseries and hardware stores for use on residential lawns.
  • Acelepryn which can only be purchased and applied by licensed landscapers.

Residents are encouraged to monitor their plants and turf for the presence of the Japanese Beetles and report any sightings of the pest to the Japanese Beetle hotline at 970-248-7000.

Help us Beat the Beetle!

The City of Grand Junction, Mesa County, and Colorado State University (CSU) Extension are teaming up to fight the Japanese Beetles- an invasive pest that feeds on more than 300 plants, including turfgrass. Our efforts are proving effective, but we need widespread support to make a significant impact on the beetle population.

The Japanese Beetle was first spotted in the Grand Junction area in 2022, and Mesa County declared the beetle a public nuisance in March 2023.


How can you help beat the beetle?

Mesa County and CSU Extension Tri-River Area are recommending insecticides with the active ingredient chlorantraniliprole to manage larvae of Japanese Beetle in turfgrass, these include

  • GrubEx which are animal and people safe and can be purchased at local nurseries and hardware stores for use on residential lawns.
  • Acelepryn which can only be purchased and applied by licensed landscapers.

Residents are encouraged to monitor their plants and turf for the presence of the Japanese Beetles and report any sightings of the pest to the Japanese Beetle hotline at 970-248-7000.

Page published: 18 May 2026, 03:34 PM