Swallowing large amounts of ethylene glycol can cause kidney damage. Crystalline silica can cause silicosis and lung fibrosis, if inhaled over a long period. It may cause respiratory tract cancer. Formaldehyde is moderately toxic, and is a skin, eye and respiratory irritant. It may cause genetic damage, and is considered to be a carcinogen.
Some formulations also contain carriers which are considered to be nuisance dusts.
Breathing high dust levels for long periods may affect lung function. The information in this fact sheet only applies to atrazine. Consult other sources for information on any other herbicide. These health effects evaluations have taken into consideration the potential for both worker and public exposure from Forest Service operations. This information has been used in assessing health risks and consequently in formulating protective measures to reduce risk to forest workers and to the public.