bout this item Contact-Free More Hygienic: Automatic soap dispenser made of ABS and IPX3 waterproof material, Built-in a precise infrared motion sensor, quickly foaming in 2.5 seconds.No contacts, no transmission of bacteria and bacteria, more hygienic Support Various Detergents: It is compatible with various liquids such as hand sanitizer and hand soap, The Non-foaming Hand Sanitizer needs to be diluted before loading the automatic Hand Soap Dispenser, and the dilution ration is 1:4. Shake the bottle to evenly mix the diluted liquid Or it won't FOAM!(The bottle is not allowed to shake with the machine) Need to install 3 AAA batteriesInstalling 3 new AAA batteries in Automatic soap dispenser, which allows the soap dispenser to work better and increase the service life! Regular Cleaning:After a period of use, need wash the thin piping to avoid blockage caused by the hand sanitizer drying in the pipe(first just remove the soap tank, insert the thin piping into clean water, and wave hand to get water out help to clean the passage) HOW TO MAKE FOAM SOAP? This automatic foam soap dispenser is made of high quality ABS material, and uses a miniature high-efficiency motor mute noise reduction design. The appearance is more concise and beautiful, durable, and increases the amount of foam. It is very suitable for bathrooms and kitchens. Use in the bathroom. Add foam soap directly or dilute regular hand wash or dish wash with water in the ration of 1:3 to 1:5 (1 part soap, 3-5 parts water). Different liquid soap might need more water, depending on its concentration. Plug the rubber stopper and swirl it gently. Unplug the stopper and slide it back into base. Press the power button of the dispenser, move your hand under the spout a few times until you get creamy foam soap. Kindly note that dont fill to top. Leave some space in the container for air which it needs to foam.