From The Lakewood Scoop. Be advised I have taken in children that touched this stuff, put in their mouth, etc., and it's incredible how it progresses into something very life threatening. A number of years ago I met the Rav that puts out a kosher for pesach book and told him that it's not an issue whether or not it's kosher for pesach, it's assur to use because of pikuach nefesh. He said he didn't know. Then he went and put it into subsequesnt books.
With Pesach Cleaning in Full Swing, Hatzolah Reminds Parents the Dangers of St. Moritz Spray
Mar 07 2013 12:13 pm
With Pesach cleaning in high gear and after several incidents last year, Hatzolah is reminding parents the dangers of the powerful St. Moritz chemical spray.
The chemical, which appears to be just another cleaning agent available in groceries, was removed from at least two Lakewood groceries last year after children suffered serious – and possibly permanent – injures to their face.
Parents of one child last year requested the graphic picture of their burned child be made public to serve as a reminder to parents to use extreme caution with the chemical.
Even a slight amount of the chemical coming in contact with skin or eyes, can cause irreversible damage.
Alternative - and less-lethal - chemicals are available. TLS.