Hey Tom
Was just reading this thread, & your experience with the Laundry Pro, & it got me thinking. Since you are a Rainbow owner, have you tried using the water from the Laundry Pro in your Rainbow? I have to wonder if the oxygenated water would help the Rainbow's water filtration system capture some smaller particles that would normally bypass the water filtration & only be caught by the HEPA filter. It could help your filters in the Rainbow last longer....and no harm in trying, after all, the Laundry Pro isn't producing a sudsing "detergent".
Rob