Best feeder insects for ants: mealworms, crickets, roaches and fruit flies

Best Feeder Insects for Ants: Mealworms, Crickets & Fruit Flies

A practical Australian guide to feeder insects for ants: what to use, how much to feed, when to remove leftovers and how to avoid mould and mites.

Feeding ants is simple once you understand the job of each food type. Workers mostly need quick energy. Larvae need protein to grow. The queen needs a stable colony around her. The keeper needs to stop turning the outworld into a tiny buffet crime scene.

Quick answer

The best feeder insect for most beginner ant keepers is usually a clean, captive-bred mealworm cut into tiny pieces. Fruit flies are better for very small workers, while cricket or woodie pieces suit larger colonies. Pair protein with clean water and a carbohydrate source such as sugar water or nectar, then adjust feeding to colony size and brood amount rather than following a rigid calendar.

If you only remember one rule: feed smaller portions than you think, then remove uneaten protein before it becomes mould or mite bait.

The three feeding basics

Need	What it does	Examples
Water	Hydration and nest humidity	Test tube reservoir, water feeder, hydrated nest
Sugars/carbs	Worker energy	Sugar water, honey water, ant nectar, honeydew substitutes
Protein	Larval growth and colony development	Mealworms, crickets, roaches, fruit flies, other safe feeders

Sugar: worker fuel

Adult workers use sugars for energy. A colony with active workers but little sugar may become sluggish or desperate to forage. Offer tiny drops for small colonies or use a liquid feeder for larger colonies.

sugar water is cheap and easy
honey water is accepted by many species but can be sticky
commercial nectar is convenient
avoid drowning workers in open liquid
clean spills before they become ant glue

Protein: brood fuel

Protein matters most when larvae are present. If a colony has lots of larvae, it usually needs more protein. If it has no larvae and only workers, protein demand may be lower. This is why brood-based feeding beats blindly feeding “every second day forever”.

Feeding by colony stage

Stage	Sugar	Protein	Notes
Fully claustral queen only	Usually none	None	Do not fuss unless species requires feeding.
Semi-claustral queen	Tiny controlled access	Tiny protein pieces	Needs safe feeding area.
First workers	Tiny drop or feeder	Very small pieces once/twice weekly	Remove leftovers quickly.
Small growing colony	Regular small sugar access	1–3 small protein feeds weekly	Adjust to larvae and acceptance.
Large colony	Reliable feeder	Frequent protein as needed	Use trays and cleanup routine.

Best feeder insects for ants: quick comparison

Feeder insect	Best for	Why it works	Main caution
Mealworms	Most beginner colonies	Cheap, easy to freeze, easy to cut into tiny pieces and accepted by many species.	Whole larvae are too large for small colonies; cut and remove leftovers.
Fruit flies	Tiny workers, founding colonies and small Pheidole/Ochetellus-type workers	Small, soft-bodied protein that is easier for little workers to process.	Culture escapes are annoying; use carefully and avoid contamination.
Crickets	Medium to larger colonies needing bigger protein feeds	Useful protein source when bought captive-bred and portioned correctly.	Can be messy; use pre-killed pieces and remove uneaten wet parts quickly.
Woodies / roaches	Growing colonies that accept larger prey	Clean, reliable feeder if sourced well and portioned to worker size.	Too much at once can foul a warm outworld fast.
Other captive-bred insects	Variety once you know what your colony accepts	Can prevent relying on one feeder type.	Avoid wild-caught insects from sprayed or unknown areas.

For most Australian beginner keepers, the safest answer is not one magic insect: use clean captive-bred feeders, match the piece size to the workers, and remove uneaten protein before it turns into mould or mite bait.

Good feeder insects

mealworms
crickets
woodies/roaches
fruit flies
small moths or other safe captive-bred feeders

Captive-bred feeders are safer than random wild insects. Wild insects may carry pesticides, mites or parasites. If you do use wild-caught prey, avoid roadsides, sprayed gardens and unknown chemical areas.

How much protein?

Start smaller than you think. A tiny colony might need a piece of mealworm smaller than a grain of rice. If ants ignore it, remove it. If larvae are present and workers swarm the food, offer a little more next time.

Colony situation	Good starting protein portion	Check/remove by
Queen with first workers	Pinhead-sized mealworm or fruit fly piece once or twice weekly.	Same day if ignored; within 24 hours if accepted.
Small colony with visible larvae	1–3 tiny feeder pieces per week, adjusted to response.	Within 24 hours, sooner in warm humid setups.
Fast-growing colony	Several small feeds rather than one huge wet chunk.	Daily cleanup routine.
No larvae / low activity	Less protein; keep sugars and water stable.	Remove ignored food quickly.

Foods to be careful with

raw meat: messy and spoils fast
processed human food: salt, oils and additives
citrus/acidic scraps: often unnecessary
wild insects from unknown areas
large wet fruit pieces that mould quickly

Mould and mite prevention

Most feeding problems come from overfeeding protein and leaving leftovers too long. Protein plus warmth plus humidity equals tiny biology having a party you did not invite.

use feeding trays or foil
remove protein within 24 hours, sooner if warm
feed smaller portions more often
keep sugar feeders clean
quarantine feeder cultures
do not let waste build up in outworlds

Species differences

Sugar-loving Camponotus may hammer carbohydrates. Pheidole colonies with brood may respond strongly to protein. Tiny Ochetellus-type workers often do better with very small protein portions or fruit flies. Semi-claustral species such as some Myrmecia and Polyrhachis need safe feeding access during founding. Seed-associated species may use seeds as part of their diet. Stinging or fast species need feeding setups that let you work safely. The rule is: feed the colony you have, not the one in a random internet comment.

For species-specific examples, see the Banded Sugar Ant guide, Black Household Ant guide, Golden Spiny Ant guide and Golden-Tailed Bull Ant guide.

Feeder insect keyword FAQ

What is the best feeder insect for ants?

The best feeder insect for most beginner ant colonies is usually a clean, captive-bred mealworm piece, cricket piece, roach/woodie piece or fruit fly. Mealworms are often the easiest starting point, while fruit flies suit very small workers. The “best” choice depends on worker size, brood demand and how quickly you can remove leftovers.

Can ants eat mealworms?

Yes, many ant colonies will accept chopped or pre-killed mealworms. They are easy to portion, easy to freeze and useful for small colonies when offered in tiny amounts. If you want a steady clean supply, read the mealworm breeding guide.

Are crickets or mealworms better for ants?

Mealworms are usually easier for beginners because they are simple to freeze, cut and portion. Crickets can be useful for larger colonies, but they are messier and should be pre-killed and chopped to a safe size.

Are fruit flies good feeder insects for ants?

Fruit flies are useful for very small workers and young colonies because they are soft and small. Keep cultures clean and handle them carefully so you do not create an escape circus in the room.

How often should you feed ants protein?

Small colonies may only need tiny protein feeds once or twice a week, while growing colonies with lots of brood may need more frequent feeding. The safer rule is to offer small portions and remove leftovers before they spoil.

Can ants survive on sugar water alone?

Workers use sugar for energy, but colonies usually need protein to raise brood. Sugar water keeps workers fuelled; protein helps larvae grow.

Useful feeding tools

Disclosure: Some product links on this page may be affiliate links. As an Amazon Associate, Ant Keeping Australia may earn from qualifying purchases at no extra cost to you.

A few simple tools make feeding cleaner and safer: long feeding forceps for protein foods and cleanup, plus clear tubs for temporary work areas or outworld-style feeding spaces once modified safely.

Winter note: if your colony has slowed down in cooler weather, use the Winter Ant Keeping in Australia guide before adding heat, extra food or moving a quiet queen.

Related guides

Sources and further reading checked

Bottom line

For most beginners, start with tiny pieces of captive-bred mealworm, add fruit flies for very small ants, and use cricket or woodie pieces when the colony is big enough to clean them up. Sugar keeps workers running; protein grows larvae; water keeps the system alive. The best feeding routine is the one that leaves healthy ants and no mouldy crime scene behind.