Zenprox EC, a broad-spectrum, contact kill product from the Zoëcon Professional Products division of Central Life Sciences, is also approved for the control of brown recluse, black widow and cellar spider species. Zenprox EC is designed for indoor use and can be applied as a broadcast, spot or crack-and-crevice treatment to a range of commercial and residential accounts including homes, hotels and warehouses. The active ingredient, etofenprox, is non-repellent and ensures quick knockdown while offering an extended residual on spiders and most common pests. The product is available in a 16-oz. squeeze-and-measure bottle.