Thief Ants | Pest ID Guide
Quick Facts About Thief Ants
Thief ants are among the smallest ants in Tennessee, so tiny they’re easy to miss. They get their name from their habit of nesting near other ant colonies and stealing their food and young.- Size: About 1/32 to 1/16 inch
- Color: Pale yellow to light brown
- Body: Two nodes and a two-segmented club at the tip of each antenna
- Nests: Outdoors in soil and near other ant nests; indoors in wall voids and cabinets
- Diet: Prefer grease and protein, such as meats, cheese, and pet food
- Also called: Grease ants
Thief Ants vs. Pharaoh Ants
These two tiny yellowish ants are easy to confuse.- Antennae: Thief ants have a two-segmented club on their antennae; pharaoh ants have three.
- Nests: Thief ants usually nest outdoors or near other ants; pharaoh ants nest indoors year-round.
- Food: Thief ants prefer grease and protein; pharaoh ants eat sweets as well.
Telling them apart usually takes magnification, and it matters because pharaoh ants spread when sprayed. See our pharaoh ant guide.
Signs and Where They Nest
- Tiny trails: Very small pale ants trailing to greasy foods, meats, and pet food
- Indoor nests: Wall voids, behind baseboards, and in cabinets
- Outdoor nests: Soil, under rocks, and near other ant colonies
Health & Property Risks
Thief ants don’t sting and are too small to bite noticeably. They can contaminate food, and their size lets them get into packaging that other ants can’t.
How to Get Rid of Thief Ants
- Use protein or grease baits: Sweet baits often don’t work on thief ants.
- Keep food sealed: Use airtight containers for meats, cheese, and pet food.
- Seal cracks: Caulk gaps around baseboards and cabinets.
- Get an ID: Confirm they’re not pharaoh ants before treating.
If trails persist, a technician can confirm the species and treat accordingly. See our ant control services.
Frequently Asked Questions
What are the tiny pale ants in my kitchen?
They could be thief ants or pharaoh ants. Thief ants prefer greasy and protein foods; pharaoh ants nest indoors and eat sweets too.
Why are they called thief ants?
They often nest near other ant colonies and steal their food and young.
What do thief ants eat?
They prefer grease and protein, such as meats, cheese, and pet food.
How do I get rid of thief ants?
Use protein or grease baits, keep food sealed, and seal cracks. Confirm they aren’t pharaoh ants first.
Do thief ants bite?
They’re too small to bite noticeably and don’t sting.
