What's Flossing? DENTAL FLOSS is the most important thing, next to brushing, for maintaining a good oral hygiene. This is an effective method for removal of plaque and debris from in between the two teeth, where a tooth brush may fail to reach because of tight contact between the two adjacent teeth. So it can also be referred to as an inter-dental cleaner. Most dentists agree that the combination of brushing and flossing is the most effective way of removing plaque from all surfaces of the teeth. Tovendor Water Flosser provides a easier way to keep you away from tooth decay and plaque. You can even use it when you have braces and implants. Three Modes Ultra-fine 0.6mm water spray with three modes Normal: 80-100psi for 60-70 sec Soft: 40-60psi for 80-90 sec Pulse: 60-80psi for 70-80 sec Suggest to start with SOFT mode if you have sensitive teeth or you are a refresh. 300ML Water Tank Free yourself from times refilling for complete cleansing, 300ml extra-large water tank is designed to make your teeth clean in one time Two Replacement Nozzles Tips with different color ring for two persons. It's perfect for couples or friends to use when they have holidays together. Dentists recommend to replace the nozzle every 6 months. Step 1 Horizontally place the oral irrigator, fill in the water, then insert the nozzle. You can adjust the direction between nozzle and the body for a comfortable holding. Step 2 Choose the appropriate pressure mode (you'd better test the presure on you arms firstly), then put the nozzle into your mouth Step 3 Make nozzle aimed at the slits between tooth and dental gum, then turn on the switch, cleansing from left to right, up to down, outside to inside. Please keep your body little bowed and your mouth slightly open while flossing. Step 4 Please continuously run the water flosser until water in tube and body comes out completely. The residual water may also damage the machine but more important, bacteria are easy to breed in dead water.