@roga you honestly believe you would win more bids than someone that uses dawn dish soap?
Most people I’ve told about using dawn soap have 100% preferred that over any other window washing chemicals. They know dawn dish soap is a safe product. They have no clue what is in the other window chemicals and if it’s truly safe or not.
I think the safer product is going to win every time. Especially when you can’t tell a difference between the two if the windows were side by side.