Don't use goggles with cloth or elastic headbands as these will absorb pesticides. Wear goggles snugly on your face so that the sides of your head are protected from splashes. If you wear glasses, make sure you purchase goggles which fit snugly over them. Never wear contact lenses when working around pesticides. Do not exchange parts of different respirators.
Dust masks are ineffective in protecting against herbicide vapors.
Similarly, the filters on tractor cabs are intended to remove dust and are not designed to protect against pesticide vapors or mists. Chemical cartridge respirators are recommended for outdoor use when mixing and applying pesticides. When carrying out operations, change filters each day. The cartridge should be replaced when chemical odour becomes apparent or when breathing becomes difficult. New cartridges should always be installed at the beginning of spray season.