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Closer™ Insecticide

Fast acting, targeted control of sucking pests.


  • Fast acting control: Quick, targeted control of aphids. Apply Closer when outbreaks occur, not weeks prior as a preventative measure.
  • Virus reduction: Closer’s rapid results decrease the chance of virus transmission in seed potato production.
  • Resistance management: Closer contains Isoclast active, the first active in a new class of insecticides.
  • Closer offers growers an effective option against sap-feeding insect populations resistant to other insecticide classes.
Closer logo


Insects controlled
  • Aphids
  • Leafhoppers
  • San Jose scale
  • Woolly apple aphid

Crops & Crop Rotation


  • Brassica (cole) leafy vegetables
  • Grapes
  • Leafy vegetables
  • Pome fruits
  • Root, tuberous and corm vegetables
  • Stone fruits
  • Tree nuts


Rate based on crop and pest. See label for details.

When to Apply

Dependent on pest. Use as indicated on product label.

Tank Mixes and Mixing Instructions

Tank mixes
  • No registered tank mixes
  • Talk to your Dow AgroSciences representative or call the Solutions Center 1-800-667-3852 prior to tank mixing

Mixing Instructions
  1. Fill the spray tank with water to about 1/2 of the required spray volume.
  2. Start agitation and add the required amount of Closer.
  3. Continue agitation while mixing and filling the spray tank to the required spray volume.
  4. Maintain sufficient agitation during application to ensure uniformity of the spray mix.
  5. Do not allow water or spray mixture to back-siphon into the water source.

Grazing & Harvest

  • Brassica (cole) leafy vegetables, leafy vegetables – Do not apply within 3 days of harvest.
  • Grapes – Do not apply within 7 days of harvest.
  • Pome fruits, stone fruits – Do not apply within 7 days of harvest.
  • Root, tuberous and corm vegetables – Do not apply within 7 days of harvest.
  • Tree nuts – Do not apply within 7 days of harvest.


  • Do not make applications less than 7 days apart.
  • DO NOT apply this product during crop flowering period or when flowering weeds are present in the treatment area (except for potatoes where applications during crop flowering period are allowed.)
  • Re-entry interval (REI) is 12 hours or until sprays have dried.
  • No buffer zones are required.

Application Guidelines

  • Boom height must be 60 cm or less above the crop or ground. 
  • Apply in sufficient spray solution to ensure thorough coverage of plant foliage. 
  • Use a minimum of 100 L of water per hectare for field sprayer applications. 
  • Use a minimum of 500 L of water per hectare for airblast applications. 
  • Aerial application – see label for specific recommendations.