I'm working from home and, being surrounded by the smells of 3 pups all the time, don't always notice the daily pup odor. So, I was not entirely sure if these were making a difference.
Knowing that this was the case, however, I kept track of how many times my spouse would say "Whew! You guys stink" (to the dogs, I think), when he got home from work. I didn't tell him of this experiment, just made a note starting a couple weeks before I installed the first filter.
Suffice to say that since abou...