Don’t just kill bugs, create a bug barrier with Ortho Home Defense Insect Killer for Indoor & Perimeter Refill2. Kill ants, cockroaches, spiders, fleas and ticks while creating an insect barrier for up to 12 months of protection (for ants, roaches, and spiders indoors on non-porous surfaces). To add the Comfort Wand from the original bottle (sold separately) to the Refill bottle, simply insert the hose connector into the spout. Then apply to the perimeter of your home to create a pest barrier. Also, use as an indoor pest control. With its non-staining and odor-free formula, you can confidently use in areas like kitchens or bathrooms.