Feeding ants properly is one of the easiest ways to keep a colony healthy, growing and behaving as it should. This ant feeding guide covers what ants eat, how often to feed them, how much to offer, and how to keep food from turning into a mouldy mess.
It also covers safe prey sourcing, water basics, species-specific feeding notes for common Australian ants, seasonal changes, and the usual headaches — fruit flies, mites, leftovers and the occasional “why are they ignoring this meal?” moment.
- 1. What Do Ants Eat?
- 2. Water
- 3. How Often to Feed
- 4. Safe Feeding Methods
- 5. Mould & Pest Prevention
- 6. Sourcing & Prep
- 7. Species-Specific Notes
- 8. Seasonal Effects
- 9. Troubleshooting FAQ
- 10. Recommended Feeders
1. What Do Ants Eat?
Ants need two broad food groups:
Sugars — energy for workers
- Typical options: honey water (1 part honey to 4–5 parts water), simple sugar water, fruit pieces such as apple, grape or banana, or commercial nectar mixes.
- Offer sugars in tiny, controlled amounts — too much means sticky mess, mould and pests.
Proteins — required for brood and colony growth
- Typical options: pre-killed insects such as mealworms, crickets, pinhead or fruit flies, small pieces of cooked egg yolk, or tiny bits of unseasoned boiled chicken or fish.
- Most hobbyists find pre-killed, frozen-thawed prey the safest and easiest option. Avoid untested wild-caught insects.
For background on Australian ants and their ecology, the CSIRO ant overview and the Australian Museum ants page are both worth a look.
2. Water
Ants need access to fresh water at all times. They do absorb moisture from food, but a reliable water source helps prevent dehydration and brood failures.
- Best options: a proper test-tube water setup (half-fill a test tube with water and plug with cotton), insect water feeders, or small pieces of damp cotton or sponge placed in a feeding dish.
- Check and refresh test-tube water weekly; replace cotton if it becomes mouldy or compressed.
See the test-tube setup guide for the full walkthrough.
3. How Often to Feed: Frequency & Portion Sizes
Feeding depends on colony size, species and season. The best rule is simple: offer an amount that will be eaten within a few hours for sugars, and within 24 hours for protein. If food is still sitting there after that, reduce the portion next time.
Quick-reference feeding table
| Colony size | Sugar feed | Protein feed | Remove leftovers by |
|---|---|---|---|
| Small (20–100 ants) | 1–2 drops every 2–3 days | 1 small mealworm segment or 5–10 fruit flies, once per week | Sugars: 2–8 hrs; protein: within 24 hrs |
| Medium (100–500 ants) | 3–6 drops or a small capful every 1–2 days | 2–4 small mealworms or 20–50 fruit flies every 2–3 days | Sugars: 2–8 hrs; protein: within 24 hrs |
| Large (500+ ants) | Daily small capful or a dedicated liquid feeder | 5–10 mealworms or 50–200 fruit flies daily | Protein: within 24 hrs |
Use the “eaten within X hours” rule as your guide. If workers clear protein in minutes, increase the portion a little next time. If it’s still there the next day, cut back.
For broader colony development context, the ant colony growth stages guide is handy when you’re trying to match food to colony size.
4. Safe Feeding Methods
Sugar feeding
- Use shallow dishes: bottle caps, small petri-dish lids, foil squares or purpose-built ant feeders.
- For liquids, use cotton-wick feeders or commercial liquid feeders to reduce drowning and stop spills soaking into the nest.
- Keep feeding dishes on a flat surface away from the nest entrance where possible.
Protein feeding
- Pre-kill and freeze-store feeder insects. Thaw them, then cut them into small pieces so even tiny workers can carry morsels.
- Offer protein on a feeding dish and remove leftovers within 24 hours so they do not rot or attract mites.
- For live-hunting species such as Myrmecia, live prey can work, but supervise carefully to avoid escapes or unnecessary harm.
If you culture feeders, the breeding mealworms guide is a practical way to reduce costs and keep hygiene under control.
5. Mould & Pest Prevention
Mould and small pests such as fruit flies and mites are the most common feeding-related headaches. Prevention is much easier than cleaning up after a problem has already moved in.
Prevention habits
- Offer small quantities — only what the colony can reasonably consume in the recommended timeframe.
- Remove uneaten protein after 24 hours, and remove sugary residue within 8–24 hours.
- Keep feeding dishes clean: rinse in hot water and mild detergent, then dry thoroughly before reuse.
- Seal or fine-mesh food culture tubs that hold fruit flies or mealworms to stop cross-infestation.
- Use a small ring of petroleum jelly or talc around feeder legs on an open table if extra escape control is needed.
Immediate cleanup if mould or pests appear
- Remove food dishes and any visible mouldy food straight away.
- If mould is in a test tube, prepare a fresh tube with water and cotton, then gently transfer the queen and brood using a soft brush or clean tweezers. Move calmly and quickly.
- Clean feeding dishes in hot soapy water. For stubborn mould, wipe the dish with 70% isopropyl alcohol after washing, then rinse and dry well before using again. Do not use chemicals inside the nest.
- Inspect the nest and nearby area for mites or persistent fruit fly breeding. If larvae or eggs are found in substrate, remove and replace that substrate.
- For delicate colonies, it is often better to move them to a fresh test tube than to try to save a badly contaminated one.
Do not spray insecticides or bleach near ants or their nest. These products can harm brood and queens, and residues linger longer than most people expect.
For a deeper look at contamination problems, see recognising and responding to mould and fungal outbreaks and preventing mites.
6. Safe Sourcing & Preparation for Prey
- Buy feeder insects from reputable suppliers such as pet stores or specialist breeders, or culture your own feeder stock.
- Avoid wild-caught insects. They can carry pesticides, parasites or pathogens that may harm your colony.
- Preparation steps: freeze-kill the feeder insects in a sealed container, thaw briefly, cut into appropriately sized pieces, and warm to room temperature before offering.
- Do not feed insects that secrete defensive chemicals, such as some true bugs and millipedes, or insects collected from sprayed lawns.
7. Species-Specific Notes for Australian Keepers
Different genera have different preferences and tolerances. These are broad rules, because ants enjoy proving us wrong now and then.
Myrmecia (bull ants / jack-jumpers)
- Hunters: prefer live or freshly-killed prey. Offer live crickets or spiders if it can be supervised safely.
- Protein-hungry: young colonies especially need regular protein to build worker force.
- Use tweezers for feeding. These ants can bite, and queens and workers move fast.
Iridomyrmex (meat ants and relatives)
- Active foragers that readily take sugars and protein. They can usually handle slightly larger portions than many smaller species.
- Keep sugar feeders topped up during warm months.
Formicinae (Camponotus, Polyrhachis, and similar species)
- Often prefer sweet liquids; brood growth still needs regular protein, but these genera can be slower, so watch how quickly they take food.
- Camponotus workers are larger, so offer correspondingly bigger prey pieces.
For a specific example, the meat ant care guide and banded sugar ant care guide both show how feeding habits can differ by species.
8. Seasonal & Temperature Effects
- Ant metabolism and appetite increase with temperature. In warm months, especially when colonies are active, they will eat more often; in cooler months, feeding can slow dramatically.
- Reduce protein during cooler periods to avoid spoilage. In winter or during deliberate hibernation periods, feed sparingly and focus on minimal sugar to keep workers alive.
- Avoid offering large fresh protein portions just before a cool change, because uneaten food can rot quickly and trigger mould.
For year-round adjustments to feeding, temperature and humidity, see seasonal temperature and humidity management for ant keepers in Australia.
9. Troubleshooting FAQ
Q: My ants ignore food — what’s happening?
A: Stress, the wrong food type, too much disturbance, or a colony preparing to relocate can all cause this. Try a stronger sugar source such as honey water, or a tiny protein morsel, then reduce disturbance and check that the temperature is suitable.
Q: The brood looks unhealthy or is shrinking — are they starving?
A: It may be protein shortage, dehydration or disease. Check water, offer a measured protein portion, and inspect for mould or mites. If the problem continues, move the queen and brood to a fresh test tube. The moving a queen ant to a new test tube guide covers that process well.
Q: I keep getting fruit flies or mites — how do I stop them?
A: Cut portion sizes, remove leftovers promptly, seal feeder insect cultures and clean feeding areas regularly. If the problem persists, switch to frozen-thawed prey and clean dishes only.
Q: Persistent mould in a test tube — can I save the colony?
A: Yes. Prepare a fresh test tube setup, gently transfer the queen and brood, and discard the mouldy tube after cleaning. Do not use chemical cleaners on the new tube; warm soapy water is best. The test-tube setup guide and the moving guide above are both useful here.
Q: Workers are dying or I’m finding dead ants in numbers — what next?
A: Stop feeding fresh food immediately and inspect for signs of poisoning, pesticides or sudden mould blooms. Check nearby plants or lawn-spray activity if wild foragers have access to the area. If contamination is suspected, isolate the colony and move them to a clean setup.
Q: Ants won’t drink from my feeder — how do I encourage hydration?
A: Try a different feeder type, such as a cotton-wick feeder, sponge-in-cap or bottle-cap dish. A tiny droplet near the nest entrance can also help workers access water more easily. Some species prefer very dilute sugar solution, so experiment slowly.
10. Recommended Feeders & Dishes
- Shallow bottle caps or petri dish lids — cheap and easy to clean.
- Foil or wax-paper squares — disposable for quick clean-ups.
- Cotton-wick test-tube feeders — excellent for queens and small colonies.
- Commercial ant liquid feeders or small sponge-in-cap systems — tidier for high-frequency sugar feeding.
If you feed on an open table, ant escape-proofing is worth the effort. A few simple precautions can save a lot of running around.
Conclusion
Good ant feeding is a balance of sugars, protein and clean water, with portion sizes kept sensible and leftovers removed before they become a problem. This ant feeding guide is meant to make that routine easier: feed for the colony size you actually have, not the colony you hope to have next month.
Quick checklist:
- Offer sugars in small amounts: drops for small colonies, capfuls for larger colonies.
- Offer protein in measured pieces: start small and scale up only when food is being cleared quickly.
- Remove leftovers — sugars within 8–24 hours, protein within 24 hours.
- Use frozen-thawed feeder insects from reputable sources; avoid wild-caught prey.
- Keep fresh water available and inspect for mould regularly.
For related reading, the mealworm breeding guide, ant escape-proofing guide and species pages such as Meat Ant and Banded Sugar Ant cover the next practical steps nicely.
Selected references and further reading: CSIRO and Australian Museum.
