Springtails for Tarantulas: The Complete UK Guide

Quick Answer: Should You Add Springtails to a Tarantula Enclosure?

Yes - for almost every tarantula setup, springtails are one of the cheapest and most effective improvements you can make. They eat mould before it becomes visible, break down uneaten prey and shed skins within a day or two, compete with pest mites for food, and reduce odour in humid enclosures. They're completely harmless to tarantulas at every life stage, from the tiniest sling to a mature adult, because they're physically incapable of bothering the spider. Add a pinch of culture to the substrate when you set the enclosure up, keep part of it damp, and they'll establish and sustain themselves indefinitely. Browse our springtail cultures for UK stock.

What Springtails Actually Are

Springtails (order Collembola) are tiny soil-dwelling arthropods, 1-3 mm long. They're visible to the naked eye, but small enough that you need to look for them. Most get their name from the furcula - a forked appendage held under the abdomen and released like a spring when disturbed, firing them several centimetres into the air.

One taxonomic point worth knowing: springtails were historically classed as primitive insects, but modern classification puts them as hexapods that are not true insects. They form their own class, Collembola. That's more than trivia - it's why their physiology and behaviour are so different from the crickets and roaches you feed your spider.

For tarantula keepers, the key facts are simple:

• They're decomposers - they consume fungus, mould, decaying matter and uneaten food.
• They're tiny and harmless - far too small and soft-bodied to threaten a tarantula of any size.
• They're self-sustaining - once established in suitable conditions they need no active feeding.
• They're invisible to the spider - they don't disturb hides, compete for prey, or react to the tarantula's presence.

Why Add Them?

Mould prevention

The main reason, and the biggest benefit. Damp-substrate enclosures are mould-prone - and that means most tropical species, most slings in high-humidity deli cups, and most arboreals where moisture sits on cork bark. Springtails consume mould before it becomes visible, which means you may simply never see a mould problem develop.

It matters most for:

• Slings in small enclosures with limited ventilation
• Tropical species needing high humidity (Theraphosa, Pamphobeteus, Phormictopus)
• Arboreals (Avicularia, Caribena, Psalmopoeus) where damp collects on vertical surfaces
• Burrowing species, where deep moist substrate is ideal mould territory

Waste processing

A dead cricket left in an enclosure with an established springtail population can be broken down within 24-48 hours. That dramatically reduces the risk of mould or bacterial blooms forming around uneaten prey.

This is useful even if you're diligent about removing prey. There's always material the tarantula doesn't finish, plus shed exuviae, occasional faecal matter, and other organic debris that accumulates.

Mite control (indirectly)

Springtails don't hunt mites, but they compete with harmful mite species for the same food. A well-established springtail population leaves fewer resources for problem mites to colonise. That indirect control is considerably safer than any chemical treatment, which risks harming the spider.

Odour and plant support

High-humidity enclosures can develop unpleasant smells from decomposing matter. Springtails process that material before decay produces odour - noticeable if you keep multiple enclosures in one room. And in planted display vivariums, they convert organic waste into substrate nutrients, which is why they're essential to any genuinely bioactive setup.

Are Springtails Safe for Tarantulas?

Yes, across every life stage:

• Spiderlings: springtails are too small to bother even the tiniest sling. They share the enclosure without competing.
• Juveniles and sub-adults: the same - they occupy a completely different ecological niche from the spider.
• Adults: entirely safe. A tarantula may incidentally ingest one while moving about; it makes no difference.
• Pre-moult animals: safe. Springtails don't approach an immobile tarantula in any meaningful way.
• Freshly moulted animals: generally safe. There are occasional anecdotal reports of springtails gathering on a freshly moulted sling, but the consensus among experienced keepers is that they're feeding on the exuviae rather than the spider - and removing the shed promptly resolves any concern.

Compared with other cleanup crew options, springtails are the lowest-risk choice available, simply because they're physically incapable of disturbing or harming the animal.

Choosing the Right Species

Tropical setups

Warm-climate species suit humid tropical tarantulas. Our Orange Springtails are a good choice here - vivid, easy to see in the substrate, and effectively non-jumping, which makes them far less irritating to work with than most. The Santa Claus Springtails are another Neanuridae species with striking red-and-white colouration.

A useful correction on the classic white springtail: the standard white culture sold across the hobby is usually Folsomia candida, and despite being marketed as tropical, it's actually a temperate species. It thrives across a broad range of conditions and works perfectly well in tropical tarantula setups regardless - but it's worth knowing what you've actually got.

Drier setups

For arid species (some Brachypelma, Aphonopelma, Grammostola), temperate springtails handle reduced humidity better than strictly tropical ones. They still need a damp refuge somewhere - usually near the water dish or under a piece of cork bark - but they tolerate the broader conditions of an arid enclosure.

By Tarantula Type

• Terrestrial (Brachypelma, Grammostola, Theraphosa): mix the culture into the surface layer and let them establish through the substrate depth over a few weeks.
• Arboreal (Avicularia, Caribena, Psalmopoeus): they work the moist substrate base but will also process debris on cork bark. Add near the moisture source. Especially useful where prey can fall and decompose unnoticed.
• Burrowing (Pamphobeteus, Phormictopus, Haplopelma): they colonise the whole substrate column, including the burrow - which matters, because you can't clean a burrow yourself.
• Slings: arguably the single most useful application. Small enclosures with limited ventilation are the most mould-prone setups you'll have, and a pinch of springtails goes a long way in a deli cup.

How to Introduce Them

• Buy a culture - it arrives as a tub of substrate with an active population.
• Tap or pour a portion onto your tarantula's substrate. You don't need the whole culture; a small portion seeds a population.
• Spread the rest across other enclosures. One culture will seed several.
• Keep the original tub going, feeding it occasionally with rice grains, brewer's yeast or a specialist springtail food, so you always have a backup.

For the first two to three weeks you may see very little - they're small and they hide. Numbers build as they feed and reproduce, and by four to eight weeks you'll typically see them gathered around food, dead prey, or damp patches.

Keeping the Population Going

• Keep part of the substrate moist. They need moisture to survive - even an arid setup should have one damp zone.
• Give them organic matter. Leaf litter or decaying wood provides feeding substrate. Our leaf litter works well.
• Top up if needed. Population crashes are rare, but a major husbandry change can cause one. Reseed from your backup culture.
• Don't worry about overpopulation. Springtail numbers self-regulate to the available food.

What Springtails Won't Do

Realistic expectations matter:

• They won't replace hygiene. Large amounts of uneaten prey still need removing by hand - springtails handle fine debris, not big accumulations.
• They won't fix bad ventilation. Stagnant humid air still causes problems, springtails or not.
• They won't eliminate every mite. Some persistent species coexist with them; a serious infestation needs separate management.
• They won't survive a bone-dry enclosure. A completely arid desert setup needs a damp refuge zone or the culture dies.

Combining with Isopods

For genuinely bioactive display vivariums - usually larger New World terrestrials - springtails work well alongside dwarf white isopods (Trichorhina tomentosa). The isopods handle larger debris and add visual interest; the springtails handle fine cleanup and mould. Our guide to building a bioactive cleanup crew covers the pairing.

For most keepers though - particularly with arboreals, slings, or Old World species where a simple enclosure is preferable - springtails alone are enough.

Frequently Asked Questions

Are springtails safe for tarantulas?
Completely. They're 1-3 mm, soft-bodied, and physically incapable of harming a tarantula at any life stage - including slings and freshly moulted animals. They occupy a different ecological niche entirely and don't compete with the spider for anything.

Will springtails harm a tarantula sling?
No. Slings are the setup that benefits most from springtails, because their small, poorly ventilated enclosures are the most mould-prone. If you see springtails gathered on a freshly moulted sling, they're feeding on the shed skin, not the spider - remove the exuviae and they'll disperse.

How many springtails do I need for a tarantula enclosure?
A pinch. You're seeding a population, not stocking a fixed number - a small portion of a culture will multiply to whatever the enclosure supports. One culture will comfortably seed several enclosures.

Do springtails get rid of mites in a tarantula enclosure?
Indirectly. They don't hunt mites, but they compete for the same food, which starves pest mites of resources. That's far safer than any chemical treatment. A serious infestation still needs separate management.

Do springtails eat tarantula poop and leftover crickets?
Yes - that's exactly the job. An established population will break down an uneaten cricket within 24-48 hours, along with shed skins and faecal matter, before any of it can go mouldy.

Which springtails are best for tarantulas?
Tropical species for humid setups, temperate for drier ones. Folsomia candida (the standard white culture) is versatile and works in most enclosures. Orange springtails are a good visible alternative and barely jump, which makes them easier to handle.

Can springtails live in a dry tarantula enclosure?
Only if there's a damp refuge - usually near the water dish or under cork bark. A completely dry desert setup won't sustain them.

Getting Started

Adding springtails is one of the lowest-effort, highest-benefit improvements you can make to a tarantula collection. Cultures are inexpensive, maintenance is minimal, and the benefits compound over months as established populations process waste continuously.

They won't make your tarantulas live longer or grow faster. But they'll make your enclosures healthier, your keeping easier, and your spider's environment more naturalistic - which is about as close to a free lunch as this hobby offers. For substrate and setup essentials, browse our accessories collection.