Eddie from Leeds, Al writes
Around boathouses and docks, you are limited to the natural products like Essentria IC3 or EcoVia as they are non-toxic to aquatic life. Essentria IC3 Insecticide Concentrate is our most popular choice for spider control in areas around water. It is effective for spiders and kills other insects like ants, eliminating the spider’s prey which will help keep new spiders from moving back into the area. This product is safe around water where most other insecticides are prohibited.
Answer last updated on: 12/19/2019