Because CFCs in aerosol spray cans in order to push the product to be sprayed, CFCs are gases results in less Ozone. In particular, there are product viscosity or density, insecticides are more CFCs so much gas.
Because the gas in spray cans CFCs. To push the product to be sprayed out. Ozone gas CFCs, which have resulted in dwindling. The product has a viscosity or density such as pesticides is even more gas CFCs.
Because in aerosol cans filling gas CFCs. In order to push the product to be injected spit it out, which caused the gas CFCs Ozone dwindling. Especially viscous products or high density. Such as pesticides, will be even more gas CFCs.