The protector is virtually invisible and does not affect the touch operation. The enclosed instructions are a bit confusing, but watching their video tutorial helps out a lot. And it helps to locate and watch their installation video don't try to find...  Read More

Cartridges fit seamlessly into my homedics ultrasonic humidifier. Have multiple humidifiers in our house and these filters really help in lowering the amount of white dust we have. Much less expensive than the ones sold by humidifier manufacturer.

The inside of my humidifier was covered with a grey slime. There seems to be no way to remove it from the inside of the water canister. They appear to be cheap knockoffs that don't really work.