I purchased several of these a few months back, one for me and the others to give as gifts if I thought it useful. Is it useful? I don't know how I lived without one all my life. I truly believe that every home should have one. It cuts down on toilet paper usage though you have to use a bit of paper to pat yourself dry. It is quite easy to install. It took me about 15 minutes to install mine. I feel it is surely more sanitary than using a bunch of tissue. A great feature of the Slim Glow is the two sprayers ,turn the control clockwise for the ladies or counter clockwise for all users. also you can control the pressure of the spray depending on how far you want to open the valve. A final word...Get one, you will be happy you  did.