Reptile Atlas

Biosecurity

Field Gear Decontamination SOP

Fieldwork can spread pathogens like ranavirus, chytrid, or mycoplasma if gear isn’t cleaned properly. This SOP standardizes gear decontamination so data collection doesn’t endanger reptiles.

Applies to:
Boots, waders, nets, traps, calipers, telemetry gear, vehicles.

Key steps:
Remove debris, disinfect, dry, and log.

Before heading out

Start clean: scrub and disinfect gear at base before deployment. Pack a decon kit: brushes, scrub pads, spray bottles, tubs, disinfectant (e.g., Virkon, bleach solution mixed fresh), clean water, trash bags, and PPE (gloves/eye protection). Print site-specific protocols and permits that require decon.

On-site workflow

- Establish a decon station away from waterways and sensitive habitat.
- Remove all soil/organic matter from boots and gear with water/brushes.
- Apply disinfectant with correct contact time (e.g., Virkon 1% for 10 min; bleach 1:10 for 10 min).
- Rinse with clean water if required by product; allow to dry when possible.
- Change gloves between high-risk tasks; keep clean/dirty zones delineated.

Special items

- **Nets/traps:** soak or spray thoroughly; remove any fish scales or mucus first.
- **Telemetry gear:** wipe down receivers/antennas; avoid soaking electronics; focus on handles and cables.
- **Boots/waders:** scrub seams/soles; consider dedicated pairs per watershed.
- **Vehicles:** spray/brush tires and footwells when moving between sites; avoid transporting mud.

Safety & environment

Mix disinfectants in well-ventilated areas; wear eye/skin protection. Dispose of rinse water away from streams/ponds; follow label/environmental guidelines. Keep SDS sheets in the kit. Never mix chemicals; label bottles clearly.

Documentation

Log date, location, gear cleaned, disinfectant used, and contact times. Note any gear left uncleaned due to time/conditions and plan follow-up. Some permits require decon logs—keep digital copies synced to your project folder.

Problem-solving

If water is scarce, use pre-moistened wipes to remove debris and apply spray disinfectant heavily; extend contact time. In freezing conditions, keep solutions warm in insulated containers and allow extra time. For damaged gear that can’t be fully cleaned, bag it and remove from rotation until repaired.

Case snapshot

A team working along multiple streams implemented this SOP. Ranavirus detections dropped and no new mycoplasma cases were detected across sites after introducing mandatory boot/nets decon and logs. Checklists at the truck reduced missed steps, and rotating two sets of gear per person kept surveys on schedule while one set dried.

Training & accountability

Teach new team members how to mix, apply, and time disinfectants; post contact-time charts in the kit. Assign a decon lead each day to verify steps and logs. Periodically spot-audit compliance— untreated mud on boots means a reset and retraining. Biosecurity works only when everyone treats it as part of the survey, not an optional extra.

Checklist

  1. Pack decon kit (brushes, disinfectant, water, PPE, logs).
  2. Set up clean/dirty zones away from waterways.
  3. Remove debris, apply disinfectant with full contact time, rinse/dry if needed.
  4. Log gear cleaned, disinfectant used, contact time.
  5. Repair/retire gear that can’t be decontaminated.

Routine decontamination is a frontline defense against spreading disease between reptile habitats.