This product is a clear concentrated liquid for use in pressure washers. It can be used in either hot or cold water however hot water will improve performance. Removes grease or road film, tar, bugs, oil, sludge, tree sap and bug stains. It is 100% biodegradable. Safe for use on all surfaces and will not harm high grade paints when used as directed. Can be used to clean inside and outside vehicle surfases and may be used for light duty cleaning of floors and walls.