"Than common household substances"
That's spooky. Look under your kitchen sink or in the laundry room. Common household substances that are very toxic and even worse if combined.
A buddy of mine used to do HazMat site mitigation estimates for Union Pacific RR. I asked him if he ever got nervous about walking on to the sites. He said no, the shit you find under the sink is 10 times spookier than any HazMat site he had been to.
"Common household substances ".................riiiiiiiiiigggggghhhhhttttt!