PBW contains Sodium Metasilicate, if you look at the
MSDS sheet, it is listed under HAZARDOUS INGREDIENTS.
And according to ehow:
"
Toxicity Classification
- Sodium silicate is a corrosive substance and exposure to it is harmful. Toxic effects are hypothetical and based on exposure time and concentration. According to the Pesticides Action Network (PAN) Pesticides Database, it is not known if sodium silicate carries carcinogenesis potential. Because it is corrosive, it is possible to suffer from sodium silicate poisoning. Therefore, if exposure is chronic, it could be considered toxic. The effects vary considerably based on the amount an individual is exposed to. According to the International Programme on Chemical Safety, "there are no relevant toxicological analyses for this chemical.”
Read more :
http://www.ehow.com/about_6390502_sodium-silicate-toxicity.html"
So I wouldn't exactly call it safe. Simple Green makes the same claim but I don't believe them, "Effective, non-toxic, non-flammable, biodegradable and non-abrasive." on their label. I stopped using PBW because it leaves behind white residue and requires hot water and to be mixed to be effective. Mean Green comes in a spray able bottle and only takes a few squeezes of the trigger. I even use the cleaner to remove any hard water stains on any glass surface, good for those who dont use filtered water and may have hard water use in their rigs.This stuff will turn em crystally clear like AIR!!...............
Yup, that would be it. I was using SG but couldn't handle the smell anymore so I switched to Mean Green. It does work great for detailing cars, just be careful around leaving it on paint for long time, it is a solvent.