Product review (3 stars): Good but not the best.
These tended to get mildew very easily, I noticed mildew on them only after about 3 weeks of use(this was the earliest that I really looked at them so who knows if they got mildew from before). They functioned, but not for very long. I'd expect a product like this to last at least a month.

Overall they're an OK product and I'll be trying other filters until i find one that agrees more with our use.