Quote:
Originally Posted by Jayfar
Personally and from admittedly unscientific observation, I think Physan is next to useless except for sanitizing surfaces and tools. In cases of serious bacterial infections, Phyton 27 and other similar systemic products do seem to help (but do require more careful handling).
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Hey Jay,
Part of what you're saying is right there - in a way... quaternary ammonium compounds are very quickly deactivated by organic components... things like potting mix etc... what's important with these products though is to use the corerct dosages to ensure that there's sufficient active ingredients to do the job even allowing for some deactivation... they do work! quats are one of the best antimicrobial compounds around as they do their job and are quite specific to deactivating and breaking down cell walls of bacteria, fungi and viral particles
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