Scientists have turned to frog saunas as a novel way to combat the deadly chytrid fungus that has decimated amphibian populations worldwide. By exposing captive frogs to controlled heat, researchers aim to sterilize skin without harming the animals, offering a low‑cost, scalable solution for conservationists.

The technique relies on precise temperature control, typically around 37–38 °C, which kills the fungal zoospores while leaving frog cells unharmed. Early lab trials show a 90 % reduction in pathogen load after a single 30‑minute session, suggesting the method could replace costly antifungal drugs.

Amphibian loss has surged since the 1990s, with chytrid responsible for over 200 species extinctions. Traditional treatments—antibiotics, antifungals—often fail in the wild due to delivery challenges. A heat‑based approach sidesteps these hurdles, offering a field‑ready tool that could be deployed in remote wetlands.

Next steps involve scaling the saunas for large herds and testing durability in humid, tropical climates. Conservation groups plan pilot releases in Costa Rica and Madagascar, while funding agencies eye the technology for inclusion in global amphibian recovery plans. Success could set a new standard for disease mitigation.