Most current sensor technology utilizes water repellent hydrophobic coating to reduce stain mark. Vdust Plus is an excellent alcohol based cleaning solution with fast evaporating quality ideal for removal of water stain, compatible with hydrophobic sensor coating. However, alcohol has poor cleaning quality for most common type of stains such as saliva and organic materials. In the other hand, Sensor Clean™ is an excellent cleaning solution powerful enough to remove organic and saliva stains but is water based. Since simple visual inspection can not determine the nature of stain light or heavy, first start with either liquid, if stain is removed, Stop. Otherwise switch liquid, use a new swab proceed with cleaning. Do not add two liquids on the same swab. Use each liquid with separate swab. Always swab in the same direction. Sensor Clean has many characteristics that make it an excellent choice for cleaning your sensor. While it is best used on water based stains and light dust contamination, it also provides excellent dust repellent properties and anti-fogging capabilities. Sensor Clean works best with VisibleDust MXD-100 Green Series Swabs. VDust Plus multi ingradient, Iso alcoholic solution, removes oil fast, evaporates fast, streak free motion compatible with both DHAP orange and Ultra MXD-100 green Vswab. Green MXD-100 Vswab patented V shape results best maneuverability inside chamber, V shape results in homogeneous motion, it cleans corner the best due to its V shape, compatible with all three solutions, multi fabric ensures best results for oil and smear removal, its soft texture is safe on coated sensor, best used for fluorine coated sensor, streak free motion. CurVswab handle creates an optimal surface contact between the swab fabric and sensor preventing streak lines associated with the regular swab handle. By using CurVswab handle, edge to edge cleaning becomes easier. With the firm grip on the swab handle sensor cleaning process is more uniform similar in technique to that of a more experience user. Thus, the quality difference between professional and regular sensor cleaning process disappears. Any beginner can become Pro simply by using CurVswab handle. This Kit includes: Green Vswabs size specific (5 per pack) Liquid cleaner Sensor Clean (1.15 ml) Liquid cleaner VDust Plus (1.15 ml) CurVswab long (1) CurVswab short (1) Strap (1)