Don't go putting words in my mouth, first, we have had clay since 1993, but read the label, "Overspray Removal Clay", so let's get the facts straight!
We sell this clay under private label to several companies and have for the last 4 years. It is not the orginal clay we started with, but a newer, less agressive.
We so sell a red agressive to the private label accounts that feel they must have it, but don't put it in our line.
Clay is a good product for what is intended for, and safe removal of IFO, ferrous particles is not the use of a clay, as the clay can not remove the acids that have penetrated into the porus paint film.
The documentations by the automanufacturers is clearly stated in their technical service bulletins.