Mike from Haymarket, Va writes
The most popular spider control product for use around water is Essentria IC3. This is the most popular choice because it effective for spiders, kills most other insects (eliminating the spiders prey which will help keep new spiders from moving back into the area) and it safe to use around water. Most other insecticides are prohibited near the water because of the risk of contaminating the water and harming aquatic animals. You will need to repeat the application once a month through the warm season.
Answer last updated on: 06/27/2012
