This video provides information on the ecology of two aquatic invasive species, Didymo and New Zealand mudsnails, and importantly, an easy-to-follow step by step protocol on how to decontaminate waders and other angling gear using Formula 409.

This protocol was based on the results of the peer-reviewed journal article: "Simultaneously Decontaminating Angling Gear for New Zealand Mudsnails (Potamopyrgus antipodarum) and Didymo (Didymosphenia geminata): a Comparison of Two Chemical Approaches" that was published in 2025 in the journal North American Journal of Fisheries Management and was authored by: Nicole Wagner, Hailee Mersino and Scott Tiegs in the Department of Biological Sciences at Oakland University, and Jeremy Geist of Trout Unlimited. This video was made possible by a State of Michigan grant to Wagner and Tiegs through the Michigan Invasive Species Grant Program.

Client: Michigan Invasive Species Program, Trout Unlimited, Oakland University

Production: Refraction Creative

Cinematographer, Editor: Sarah Griffith

Producer: Scott Tiegs

Production Assistant: Karoline Ammar