Don;t really know if these filters work because I don't know how to tell that. However, the price was great (beat our local prices by 50%) and the service fast. Would highly recommend this purchase. The filters do grab tons of dog hair (and you can actually scoop out the dog hairwe have four dogs and a cat). They last much longer than the smaller filters and came with a great review from our local HVAC company that charged us twice this price for them.
I would recommend them and would highly recommend this source for purchases.
These little guys are perfect for half-pint canning jars. Keeps stash perfect at 62% Will revive dried-up, over-the-hill stash or will dry overly wet or even un-cured stuff in less than a week.
I ordered it because the product advertised that it was the scent of freashly brewed coffee. It do not live up to the expectations at all. Yes, the scent was pleasant, but did not smell like coffee as described and for that reason I have rated it two stars.