A couple of weeks ago, I had some friends over for a luncheon at my house. I took them on a brief tour since none had previously seen my home. Everyone commented on how clean my 16 year old's bathroom is and how fresh smelling. I explained that each day I require my son to use his Scrubbing Bubbles Shower Cleaner. I told them that it helps keep his shower clean between scrubbings and helps the bathroom smell fresh, which is a chore with a teenage boy! I use the new dual head sprayer in my own shower and my son has the single head sprayer. I don't notice a difference between the two but I do think that the dual head may use more solution per use. I have owned the single head sprayer for at least six months now and have not yet needed to change the batteries. This product has been great at keeping down some of the grime and soap scum between cleanings! I recommend it to anyone looking for this type of cleaning product!