While this mix is highly toxic to cockroaches, it is relatively harmless to humans and pets. ... Don't use too much boric powder in one place, as cockroaches will avoid it if they see it. Can we mix boric acid in rice? Boric acid or H₃BO₃ is used in the rice as a ...
61.18.1.3Toxicity to Humans Experimental Exposure Pfeifferet al.(1945)demonstrated by animal studies and by a review of human case histories thatboric acidis absorbed easily from injured skin. By studies in adult volunteers who were heavily exposed to 5% solution or to 10% boric acid ointment, ...