My husband and I are busy like anyone and we try our best to keep up on the bathroom cleaning but when we saw the add for this automatic shower cleaner I must say it was very tempting. WE have sliding glass doors that are in our shower/tub area that everyone in our household uses. No matter how hard we scrub those doors they continue to be a bit "dingy". We purchased this cleaner and installed it in the shower. I was concerned because we have a shower caddy we use in the shower and I didn't want to have to take that down but my husband managed to rig it up so we have both of them. When you press the botton on the unit after you exit the shower an alarm sounds to alert you that you have 15 seconds to exit the shower before it begins spraying. When I hear the alarm, I close the door and you can see it working through the glass. We have had this product in our shower for over a week now and my husband and I have already noticed a difference in the glass doors. It is a brainless/effortless way to keep the bathroom clean in between cleanings. I highly recommend trying this product!