I really like these products because it is so nice not having to touch the soap dispenser, especially while working with food in the kitchen. It is a really good concept, but like some others, we've run into a problem with ours. Every time we turn off the one light in the kitchen, the dispenser always dispenses twice, wasting soap and creating a mess each time. I originally thought it was the batteries, so I changed them. After it continued to function the same way, I went out and bought a new one, thinking the unit was defective. The new unit seemed to function better at first, but after a couple days, it started acting just like the first one.As much as I like these, I'm frustrated because of all the soap it wastes and the mess they make. Since we have several refills, we're going to use them, but I'm unsure if I will purchase more. If there is a fix for this problem, I'd love to know about it because I really do like the concept of these dispensers.