How can a grain mite be eliminated? - briefly
Remove infested grain, thoroughly clean the storage area, and treat the remaining product with either low‑temperature storage (below 5 °C) or heat exposure (above 60 °C); if those methods are insufficient, apply an approved acaricide according to label directions.
How can a grain mite be eliminated? - in detail
Grain mites thrive in stored cereals, legumes, and dried fruits where moisture exceeds 12 %. Effective eradication requires a combination of sanitation, environmental control, and targeted treatment.
First, remove all infested product. Discard any kernels, seeds, or nuts showing visible mites, webbing, or discoloration. Clean storage containers thoroughly with hot water (≥ 60 °C) and a detergent that removes residues. Rinse, dry completely, and, if possible, expose surfaces to direct sunlight for several hours to reduce residual populations.
Second, adjust storage conditions to inhibit mite development. Maintain relative humidity below 10 % and temperature between 0 °C and 10 °C. Use desiccants such as silica gel or calcium chloride packets, replenishing them as moisture levels rise. Install a calibrated hygrometer to monitor humidity continuously.
Third, apply chemical or non‑chemical controls when infestation persists after sanitation and environmental adjustments.
- Fumigants: Phosphine gas, applied in sealed containers according to label dosage, penetrates grain masses and kills all life stages. Ensure airtight sealing for the recommended exposure period (usually 48–72 h) and ventilate thoroughly before reuse.
- Inert dusts: Diatomaceous earth, applied at a rate of 1–2 % by weight, abrades the exoskeleton of mites, leading to dehydration. Mix uniformly with the product and store for at least 14 days before consumption.
- Biological agents: Entomopathogenic fungi (e.g., Beauveria bassiana) can be introduced as a spray onto grain surfaces. Follow manufacturer instructions for concentration and re‑application intervals.
Finally, implement a routine inspection schedule. Examine stored goods monthly for signs of mite activity, verify humidity readings, and rotate stock to prevent prolonged storage. Document all interventions to track effectiveness and adjust protocols as needed.