Pesticide Safety, Handling, and Personal Protection
Signal words and hazard communication
The label signal word reflects acute toxicity: DANGER–POISON with a skull and crossbones indicates the highest acute hazard (and typically a highly toxic oral or dermal value), DANGER indicates severe eye or skin damage or high toxicity, WARNING indicates moderate toxicity, and CAUTION indicates low toxicity. The signal word tells you how serious the hazard is; the PPE section tells you what to wear.
Routes of exposure
Dermal absorption is the most common route of applicator poisoning, which is why gloves and coveralls matter so much. Oral exposure is usually accidental - eating, drinking, or smoking before washing hands. Inhalation matters most with vapors, dusts, and mists. Ocular exposure is serious because eyes absorb rapidly and cannot be protected by gloves.
PPE essentials
Follow the label exactly; different PPE may be required for mixing and loading than for application. Use chemical-resistant gloves - never leather or fabric - and note that gloves should be unlined or have a chemical-resistant liner. Respirators must match the label (dust/mist filter versus vapor-removing cartridge) and be fit-tested and cleaned. Mixing and loading concentrate accounts for a disproportionate share of poisonings, so treat it as the highest-risk task.
Traps in questions
- “More PPE is always safer.” Not true - over-protection causes heat stress, which is itself a serious hazard. Balance protection against heat illness.
- Removing PPE because it is uncomfortable, or wearing contaminated gloves to touch your face, phone, or door handles.
- Washing pesticide-contaminated clothing with family laundry.
Rule of thumb
Dress for the label, then prepare for the worst-case spill: keep a spill kit, absorbent material, and clean water on site, and never leave a mixed tank unattended. Wash hands before eating, drinking, smoking, or using the restroom - every time.