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Joanna from Anahuac, Tx writes

I need to get rid of whiteflies on my hibiscus in my greenhouse. How much Forbid 4F should I use in my 2 gallon sprayer and how often?

Answer:

The Forbid 4F label states to use 2 to 4 fl. oz. (60 - 120 mL)/100 gallons of spray solution or 3-6 ml in 5 gallons of water, applied as needed for whiteflies.  So you would use 0.02 fl oz to 0.04 fl oz per gallon. of water for smaller applications or the 5 gallon rate.

Answer last updated on: 04/24/2017

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