Evolution Air filter oil has all the great dirt stopping tackiness and high air flow characteristics as the original No-Toil Filter Oil, but without the alcohol. Evolution is compatible with any brand of air filter and, without the alcohol solvent, the foam element will last longer and glue seams won't delaminate. Evolution is compatible with the original No-Toil Filter Cleaner and cleans amazingly easy and quick and will shock your senses with how clean it will get your dirty filter. For the oil to tack up, it may take as long as five or more hours. No-Toil recommends letting it set out overnight before use. No alcohol. Non-flammable. Only "air shippable" foam air filter oil in the world. Compatible with all foam air filters. Foam friendly (will not degrade foam). Hi-Tack. Completely biodegradable and non-toxic. Waterproof: will not wash off filter with water alone.