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Jerry from United States writes

Pesticide to control spiders, flying gnats, mayflies and mud daubers

We are searching for a product suitable to be used around an aquatic setting. I am responsible for the upkeep of a large marina on a Federal Reservoir in Kansas. We suffer from an over-abundance of flying insects which attract spiders which attract mud daubers which irritates everyone. I need a pesticide that I can apply to the concrete walkways, metal support columns and the roof beams that will provide a contact and residual control of these predominant insects pests. As you may understand the problem is that we are a floating structure over the lake waters. Would you recommend a product for my application.

Answer:

EcoVia would be a good product to use over water as it poses no aquatic toxicity and is an all natural product.  It will not provide a contact kill and concentrates are not designed to do so once dry but will last about 2-3 weeks on exposed outside surfaces, longer on surfaces not exposed to the eliminates. 

Answer last updated on: 08/14/2014

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