Shop for Garden Center at The Home Depot. Hot Shot MaxAttrax Roach Killing Powder with boric acid is a long-lasting, odorless powder effective in killing roaches and other crawling insects. The powder provides long-lasting protection from further infestations as long as it stays dry. Hot Shot MaxAttrax Roach Killing Powder with Boric Acid sticks to the roaches it comes in contact with. These roaches then spread the powder to other areas where roaches multiply and hide. The end result is all roaches (seen and unseen) are killed. Allow 14 days for the control of roaches.