Hi Richard, one of the reasons we stopped trusting the big chemical producing companies was because they informed us for many years that their chemicals were safe to use, this is not so true when you look into further the caustic and corrosive ingredients that they use to produce their harsh cleaning chemicals, We took on faith for many years their reps advice that their products were safe and effective, yes they were effective alright in causing detrimental damage to our clients surfaces. It took us many years to cop on to their crapology and this is why we would never trust these large companies who have huge budgets for marketing and can fool many people in the industry. Just look at the largest selling cleaning brand on the domestic market in Europe (i will just use the word BANG) these companies spend millions on their advertising campaigns but never worry about the damage their harsh cleaning chemicals cause to surfaces. That is why i would always recommend to check the msds for any product you are going to use on clients surfaces.