Thanks for giving us feedback on the accuracy of our filtering products. The information you provide helps make all of our customers safer. We're continuously working hard to improve the filter, so we do read your feedback but don't really have time to respond personally. We only ask for contact information in case there is a specific issue you raise that we need more information about. This is not the way to get help- if you need help with our products, leave us a note.
Questions labeled in red are required.