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Alison from Prairieville, La writes

Will Onslaught FastCap Spider and Scorpion Insecticide work for maggot prevention?

Have flies and then got maggots that keep coming back every now and then. wanted to treat house well. I have Fastcap.


Onslaught FastCap Spider and Scorpion Insecticide is not directly labeled for maggots for the common house fly, but it would help with the maggot control as it would cause the fly population to decrease rapidly. It should be mixed at 0.5 oz. per gallon of water and applied on the exterior of the home focusing around windows, doors, areas of direct sunlight and where you notice the flies congregating. Using a fly bait trap such as the Flies Be Gone Trap to draw the flies away from the home is also recommended. 

Answer last updated on: 08/22/2018

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