Ask the Wiggly Experts: Where Does the Moisture Mat Go on My Worm Farm and How Long Do They Last?

February 18, 2026

by Wiggly Wigglers

Ask the Wiggly Experts: Where Does the Moisture Mat Go on My Worm Farm and How Long Do They Last?

Q: I’ve got a moisture mat for my worm farm—where should I place it, and how long does it usually last?

A: Moisture mats are brilliant at keeping the environment inside your worm farm just right—moist but not soggy. You should place the moisture mat on top of your worm bedding or compost layer, directly beneath the lid. This helps retain humidity and prevents the surface from drying out.

As for lifespan, a good-quality moisture mat can last anywhere from three months to a year, depending on use and care. Over time, they can become worn or less effective at retaining moisture, so it’s wise to replace them when you notice dryness creeping in or damage to the mat.

Remember, the goal is to maintain a cosy, damp environment for your worms—not wet or dripping. If you’re ever unsure, feel the bedding—if it feels like a wrung-out sponge, you’re spot on!

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