Product review (5 stars): I've had great success!
I've purchased these filters a couple times now and found they work well in my Lasko humidifier. i run my humidifier 24/7 from late-November/early December until at least the end of February. I put fresh filters in at the beginning of the season and take them out when I'm ready to put the humidifier away at the end of the season. They are still in good condition when I take them out, but they aren't expensive so I just discard them and used new ones each season. I've had other humidifiers that didn't fare so well on the filters. I'm very pleased with the Lasko humidifer AND their filters.