Berryman B-12 Chemtool Carburetor, Choke & Throttle Body Cleaner is an aerosol cleaner, two formulas of which exist. Our standard product (part #s 0110, 0113, 0117 & 0120) is chemically identical to our B-12 Chemtool Fuel System Cleaner (part #0116) but we also offer low VOC-compliant formula (part #s 0110C, 0113C, 0117C, 0120C & 0152) in certain parts of the country. Both formulas are fully compatible with all modern gasoline-based fuel systems. However, prolonged spraying of any aerosol product, especially in humid environments, can lead to absorption of moisture and should be avoided if possible.