How to Kill Cockroaches With Boric Acid

Eliminate cockroaches with boric acid.

Cockroaches are dreaded pests found in many homes. These insects make their way into homes and quickly multiply. According to University of Kentucky Extension entomologist Mike Potter, cockroaches are second only to dust mites as the cause of allergic reactions in people. One of the safest methods of ridding a home of cockroaches is the use of boric acid, which can be purchased at many home improvement and hardware stores. Boric acid will be absorbed by cockroaches, which will die from dehydration.

Things You'll Need

• 1/2 cup boric acid
• 1/4 cup water
• 1 cup flour
• Paper towel

Instructions

1. Combine 1/2 cup boric acid powder with 1/4 cup water and 1 cup flour.

2. Place small amounts of the mixture in the bathroom. Ideal spots for the mixture are behind the toilet, underneath the vanity and anywhere the cockroaches have been spotted.

3. Place small amounts---no larger than a spoonful---of the mixture in the kitchen. Ideal locations are behind appliances, under the sink, along edges of cabinets and anywhere else cockroaches have been seen.

4. Do not place the mixture anywhere that it might come in contact with food---for humans or pets. Wet a paper towel and remove any spills in such areas.

Tips & Warnings

• Your local government's extension office can advise you of any prohibitions or restrictions against the use of boric acid.

• Wear gloves when handing boric acid. If it comes in contact with the skin, wash it off immediately with soap and water.

References

• University of Kentucky Extension: Cockroach Elimination
• Apartment Ratings: How to Kill Cockroaches