Harris Famous Roach Tablets has been killing roaches since 1922! Kills roaches， waterbugs & silverfish. Just place tablets in out-of-the-way areas where roaches travel and roaches will find them. One box can treat an entire house， making it one of the most efficient and cost-effective ways to kill a roach. For use in residential and commercial applications. 

Just place tablets in out-of-the-way areas where roaches travel and roaches will find them. One box can treat an entire house， making it one of the most efficient and cost-effective ways to kill a roach. With just on one box of Harris Roach Tablets you can treat an entire house. Please read "Use Instructions" for additional suggestion/guideline on tablet placement. You will want to place the tablets in out of the way spots that roaches like to hide and live. Harris Tablets work on controlling American Roaches， German Roaches， Waterbugs， Silverfish and Ants.

Product Features: 

• Long lasting when kept dry
• EPA registered and approved in all 50 states
• Active ingredient 40% boric acid; other ingredients include sugar， flour and our formulated lure
• Keep out of reach of children and pet
• No expiration date but we recommend replacing every 1-2 year