Reducing dermal exposure to agrochemical carcinogens using a fluorescent dye-based intervention among subsistence farmers in rural Honduras

•Subsistence farmers in Honduras are vulnerable to adverse effects of agrochemicals.•Fluorescent dye is used in safety demonstrations and to quantify dermal exposure.•Ability of safety demonstrations to reduce future exposure is unproven.•Prior dye experience was associated with less contamination vs. dye-naïve controls.•Community interventions that include tracer dye may help reduce agrochemical exposure.