Product review (3 stars): They work...
Not much to say with this product.

It works in my humidifier, but the life span of the filters are pretty poor for the price you pay. It just seems like they should last longer.

Also, most of the humidifiers I have seen, including mine, take (2)two filters for a complete change. These are sold in packs of (3)three. Kind of lame if you ask me.