The Ultimate TNR Trapper Checklist

Trap-Neuter-Return (TNR) is the single most effective, humane method for managing community cat populations and improving their quality of life. However, a successful TNR mission doesn’t happen by accident—it requires thorough preparation, seamless communication, and meticulous execution.

To support our community cat caretakers and volunteer trappers in Indianapolis, Indy Neighborhood Cats (INC) relies on a comprehensive Trapper Checklist. Whether you are setting your first trap or managing a large colony, use this step-by-step guide to ensure your next trapping effort is safe, organized, and stress-free for both you and the cats.

Phase 1: Planning and Preparation (Before You Trap)

Success begins long before the traps are loaded into your vehicle. Proper assessment and logistics lay the groundwork for a smooth operation.

• Receive Your Official Assignment: Always confirm your assignment and project details with the INC trapping coordinator before getting started.

• Assess the Colony & Caretaker: Meet with the caretaker to inspect the location. Pro Tip: Save the caretaker’s contact details directly in your phone so you have immediate access to them while working in the field.

• Lock Down a Feeding Schedule: Confirm that the cats are being fed on a consistent daily schedule. Identify exact feeding times and check if neighboring properties are also providing food.

• Identify Special Considerations: Develop a clear plan for unique situations prior to setting traps:

  • Ill, injured, or senior cats needing immediate veterinary intervention.

  • Nursing mothers and young kittens (always follow Watch, Wait, Evaluate protocols).

  • Older kittens (3+ months eligible for TNR).

  • Mass trapping projects (15+ cats requires explicit coordination with the trapping team).

  • Extreme weather precautions.

• Secure Required Documentation: A signed Caretaker Agreement / Release Form must be completed before trapping begins. Snap a clear photo of the first page and submit it via email or text to Lisa or Dawn.

• Pick Up Traps & Supplies: Retrieve cleaned traps and gear from the FIDO warehouse (1505 N Sherman Dr, 46201) during designated open hours (Sundays 12–3 PM or Wednesdays 3–6 PM).
  
  

Phase 2: Pre-Work & Neighborhood Communication

Clear communication guarantees that the cats are hungry enough to step into the traps and that neighbors understand what is happening.

• Coordinate Food Withholding: Remind caretakers multiple times that all food must be withheld for a full 24 hours prior to trapping.

• Distribute Educational Resources: Share written and verbal trapping tips with caretakers and address any questions they may have.

• Hang Neighborhood Notifications: Place informational door hangers on surrounding homes. Ensure you clearly write:

  • The exact trapping dates and times.

  • The INC Helpline phone number.

  • The target return date for the cats.
    
    

Phase 3: Trapping Day Execution

When trapping day arrives, stick to the routine and treat every cat with care and respect.

• Time It Right: Align your trapping window precisely with the cats’ normal feeding time.

• Safe Transport: Coordinate careful trapping and immediate transport to the spay/neuter clinic.

• Complete Trap Tags Legibly: Clearly label every trap tag:

  • Write a prominent “M” in the top-left corner for cats with known medical issues (and detail the issue on the back of the tag).

  • Write a prominent “P” in the top-left corner if the cat is known or suspected to be pregnant.
    
    

Phase 4: Post-Trapping Wrap-Up & Colony Return

A TNR mission is only complete when the cats are safely back in their territory and the equipment is disinfected.

• Benchmark Success: While 100% project completion is always the goal, trapping 90% of the colony is considered a complete project. Every possible effort should be made to trap female cats.

• Return & Caretaker Handoff: Safely release the cats back to their colony site. Provide the caretaker with the post-surgery paperwork, an INC fridge magnet, and a thank-you letter. Review any medical observations that require ongoing monitoring.

• Gear Sanitization: Return all used traps and supplies to the FIDO warehouse for cleaning and sterilization.
  
  

Need Help with a Local Colony?

TNR saves lives, stabilizes neighborhoods, and keeps healthy community cats out of local shelters. If you are caring for outdoor cats in Indianapolis or want to volunteer as a trapper, reach out to Indy Neighborhood Cats today!