Some cockroaches are perching insects that can thrive on top of high surfaces like shelves, and these should be inventoried and cleared for application of the insecticide.
Hydrochloric acid is sold commonly as muriatic acid as a solution to acidify swimming pools. [6] X Trustworthy Source Centers for Disease Control and Prevention Main public health institute for the US, run by the Dept. of Health and Human Services Go to source Hydrochloric acid should be handled with extreme caution. Use gloves, eye protection, and respiratory protection (in a well-ventilated area) and can cause significant harm. Have baking soda on hand to neutralize any strong-acid reaction that is unintended. Do not use water to treat strong acid burns. [7] X Trustworthy Source Centers for Disease Control and Prevention Main public health institute for the US, run by the Dept. of Health and Human Services Go to source
A recycled ketchup bottle can be used as a kind of bellows to distribute the insecticide powder in the tight space of an electrical outlet with minimal risk. Squeeze the bottle to test and make sure dust comes out (take care to not get any in your eyes, mouth or nose). Make sure the hole of the bottle you’re using is large enough for the borax crystals to go through freely. Borax is soluble in hot water, as is boric acid and can be dissolved and put in a spray bottle, and the dried residue of aqueous boric acid is essentially undetectable to the insect and low risk to humans. [8] X Research source However, if you are applying it near electrical outlets use it as a powder.
Spread the borax really thin so it’s not as visible, or else the roaches will try to avoid it. [10] X Expert Source Kevin CarrilloMMPC, Pest Control Specialist Expert Interview. 22 October 2019.
If you targeted carpeted areas, vacuum a short time after application. Any eggs will be killed in short order, but the insecticide dust can cause lung irritation or toxicity in pets and small children. It is not advisable to leave it in an area where it will be kicked up as dust continually.
