Foldable Posted Warning Sign Always There

Foldable sign
Foldable posted warning signs for restricted-entry interval (REI) are permanently attached to metal stakes in fields. The posted warning sign is cut in half. Unfold prior to spraying pesticides to make it visible and fold when REI is complete.

Photo by: Kit Galvin


notes icon Take note

Metal posted warning sign is cut in half and attached with a wire. The foldable REI is fastened to a metal stake.

supplies icon Supplies

  • Stake
  • Metal Do Not Enter Sign
  • Metal cutter
  • Wire
  • Drill bit

setup iconSetup & use

  1. Use a metal cutter to cut the Do Not Enter Sign in half.
  2. Use a drill bit to cut two holes in each half.
  3. Thread the wire throughout the holes to connect both halves of the Do Not Enter Sign.
  4. Attach the Do Not Enter Sign onto the stakes

tips icon Tips

Foldable REI signs can remain permanently at the four corners of the fields.

alert icon Alert

Unfold the posted warning signs at the start of restricted-entry interval and remember to fold over the signs when the REI period ends.



“I do like using it, it’s very practical. I like that it’s semi-permanent in all fields. I don’t need to carry the stakes and signs for every pesticide application.”
Pesticide Handler


Pesticide Educational Resources Collaborative: Posting Warning Signs


Worker Protection Standard Rules for Warning Signs


Federal (Code of Federal Regulations)

Washington State

Last updated

We hope that you will be inspired you to incorporate solutions into your own training style, develop your own hands-on teaching tools, or discover new practical solutions. We hope that you are inspired to use these solutions in your workplace. Did you try one of the practical solutions or develop a new one? We would appreciate hearing about your ideas and experiences.

Thank you and safe pesticide handling,

Contact your state agency for more information on WPS regulations. The content of this website is for informational purposes only. It may need modification to fit your needs or it may not be appropriate for your workplace. Safe use of these solutions is your responsibility. The University of Washington and the Pacific Northwest Agricultural Safety & Health Center is not responsible for any loss or damage resulting from the use of the information provided on this website.

PNASH Project 2016-2021 (CDC/NIOSH Cooperative Agreement # U54 OH007544)

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