My understanding is that all the "other" foaming cleaners are the "Forrest bore foam", made in Finland, that has been available for years. It is said to be not quite as good as Wipe-out.
As far as powerful, I've never had any damage on finishes, but that's not a license to let it soak through. Plug the chamber, squirt down the bore, and TRY not to let it go all over everything.... <img src="/ubbthreads/images/graemlins/wink.gif" alt="" /> I've found that disposable earplugs (especially the ones with the flare on the bottom) work very well to keep the stuff in the barrel, where it belongs. HTH, Dutch.
