Description
Fungus Gnat Trap for Vivariums & Terrariums
A passive trap intended to help reduce adult fungus-gnat numbers around humid vivariums, terrariums and plant-growing areas.
Important animal-safety change
Do not place exposed adhesive where frogs, geckos, isopods or other animals can contact it. Earlier wording described the trap as “100% safe” and instructed keepers simply to unwrap it and place it inside the enclosure. We have removed that advice.
For animal enclosures, use the trap outside the animal-accessible space, for example adjacent to ventilation, or behind a secure barrier/mesh that allows small flying insects to reach the trap while preventing every enclosure inhabitant from touching the adhesive.
What it can and cannot do
- Can capture some flying adult gnats that encounter the trap.
- Does not remove eggs or larvae already developing in substrate.
- Does not replace correction of persistently wet substrate, excessive decaying food or other conditions supporting a gnat population.
- Effectiveness and useful life depend on insect pressure, humidity, dust and placement; “30 days” is not guaranteed.
Managing fungus gnats
Where appropriate for the animals and plants, reduce consistently saturated areas, remove decaying excess food and inspect incoming plants/substrates. Any pest-control treatment placed inside an amphibian enclosure should be selected conservatively because amphibian skin can absorb environmental chemicals.
Amphibian Contact-Safety Review
Last reviewed: 5 September 2026
Amphibian skin is highly permeable and the absorption of chemicals can differ markedly between species and body regions. For that reason, Frogfather avoids describing products as generically “frog-safe” merely because they are natural, chemical-free, low-odour or free of volatile solvents. Direct-contact products and residues should be minimised unless their composition and intended amphibian use are known.
Evidence & further reading
- Llewelyn et al. – percutaneous absorption of chemicals in frogs
- Llewelyn et al. – inter-species variation in frog skin permeability
- Quaranta et al. – amphibian skin permeability to xenobiotics
