Pests
The best ant moats for hummingbird feeders
There is one specification worth comparing, and almost nobody lists it.
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The Trap-It Ant Moat, because it holds three-quarters of a cup of water — more than most moats on the market. That single number is the whole comparison: a moat works entirely by holding water, and the failure mode is evaporation on a hot day, which is exactly when ants are busiest. Better still, buy a feeder with a moat built in and you cannot forget it.
Quick picks
| # | Product | Best for | Score | Price |
|---|---|---|---|---|
| 1 | No product photo yet Trap-It Ant Moat 3/4 cup of water, open hooks both ends, one piece of plastic | Best add-on moat | 8.8 out of 10 | |
| 2 | No product photo yet Aspects HummZinger HighView 12 oz Part of the lid — nothing separate to lose | Best built-in moat | 9.0 out of 10 | |
| 3 | No product photo yet Aspects HummZinger Ultra 12 oz Brass hanger holds the moat; ports hold the guards | Moat plus bee guards | 8.9 out of 10 | |
| 4 | No product photo yet Kingsyard 24 oz Glass Feeder Large-capacity moat and a stainless hook in the box | Largest included moat | 8.1 out of 10 |
Scores are our own editorial ratings from the criteria on our methodology page. They are not customer ratings and they are not test results.
How a moat works, and what that implies
A moat hangs between the hook and the feeder and holds plain water. Ants coming down the wire meet water and stop. That is the whole mechanism, and it means the only property that matters is whether there is water in it right now.
Which is why capacity is the specification and everything else is packaging. A three-quarter-cup moat and a one-tablespoon moat are equally effective when both are full; on a July afternoon only one of them still is.
What to look for
- Water capacity. Half a cup minimum; three-quarters is better. The Trap-It publishes three-quarters of a cup, which is unusually generous for the category.
- Open hooks top and bottom. Open eye hooks let you fit almost any hanging feeder without threading anything through anything.
- One-piece construction. A moat is an open cup of water outdoors all summer. A single piece of weather-resistant plastic has nothing to fail.
- Red, not yellow. A trivial point with a real basis: Audubon advises avoiding yellow near feeders because it attracts bees.
Built-in beats add-on
If you have not bought the feeder yet, buy one with a moat integrated. The HummZinger line builds it into the lid or the brass hanger, First Nature builds it into the base, and both Kingsyard models and the More Birds Ruby include one.
An integrated moat is one you cannot forget to buy, cannot lose over winter, and top up without unhooking anything extra. The add-on exists for feeders that came without one — see feeder parts.
Using one properly
- Plain water only. Never oil, never soap. A moat sits directly above the feeder and anything in it ends up on the feeder and then on a bird.
- Top it up at every refill. Every three to five days you are already there. Ten seconds.
- Tip it out and rinse it occasionally. It is standing water in a garden.
- Make sure the feeder hangs free. A moat protects the wire and nothing else. A feeder touching a wall, a branch or a post has a route the moat does not cover. Placement.
Pole-mounted feeders need something else
A moat only works on a feeder hanging free from above. Ants going up a pole walk straight past it. If your feeder is post-mounted, you need a barrier on the pole itself rather than a moat above the feeder — or move it to a hanging hook, which is simpler.
Full context on the ant problem is on keeping ants out of a hummingbird feeder, and the folklore fix worth ignoring is on the aluminum foil page.
The picks in full
Every pick, in detail
1. Best add-on moat
Trap-It Ant Moat
A three-quarter-cup water moat that hangs above any feeder. It holds more water than most, which is the only spec that matters — a moat that dries out on a hot afternoon is a bridge.
photo yet
- Type
- Hanging water ant moat
- Water capacity
- 3/4 cup
- Dimensions
- Approx. 3" diameter x 3.5" tall including hooks
- Material
- One-piece weather-resistant plastic
- Hooks
- Open eye hooks top and bottom, 3/8 in diameter
- Colors
- Red, orange
Our score: 8.8/10 — an editorial rating, not a customer rating or a test result.
Cleaning access
One open cup. Tip it out, rinse it, refill with plain water when you refill the feeder — conveniently the same visit.
What works
- Larger water capacity than most moats, so it survives a hot day without going dry
- Open hooks top and bottom fit almost any hanging feeder
- One piece of plastic — nothing to break or lose
What doesn’t
- Does nothing whatsoever for bees or wasps; that is a port-size problem
- Needs topping up, and an empty moat is worse than none because you stop checking
- Only useful on a hanging feeder — a pole-mounted feeder needs a different answer
Specifications from Duncraft — Trap-It Ant Moat and Amazon — Trap-It Ant Trap. We have not handled this feeder — here is what we did instead.
2. Best built-in moat
Aspects HummZinger HighView 12 oz
A four-port saucer feeder with the ant moat built into the lid and a cover that lifts straight off — the shortest path from hanging it up to washing it out.
photo yet
- Type
- Saucer (dish)
- Capacity
- 12 oz
- Feeding ports
- 4
- Material
- Polycarbonate, metal hanger
- Dimensions
- 7.75" x 7.75" x 1.75"
- Ant moat
- Built in
- Perch
- Raised wraparound perch
- Mounting
- Hang or post mount
Our score: 9.0/10 — an editorial rating, not a customer rating or a test result.
Cleaning access
Two parts. The cover lifts off the base with no tools and no threads to cross, and the whole dish is one open bowl — a two-minute wash with a brush and hot water, which is exactly the cadence a nectar feeder needs. The moat is part of the lid, so there is no separate accessory to lose or forget to refill.
What works
- Saucer design puts nectar below the ports, so it does not drip as the air inside warms
- Ant moat is integral to the lid rather than a separate hanging accessory
- Opens to a single shallow bowl — the easiest shape in the category to scrub
- Raised ports shed rain, which keeps the nectar from being diluted
What doesn’t
- 12 oz is small for a busy yard
- Polycarbonate clouds over several seasons in a way glass does not
- No bee-excluding port tips fitted — that is the Ultra's feature, not the HighView's
Specifications from Duncraft — Aspects High View HummZinger and Amazon — Aspects HummZinger HighView 12 oz. We have not handled this feeder — here is what we did instead.
3. Moat plus bee guards
Aspects HummZinger Ultra 12 oz
The same saucer body as the HighView with Nectar-Guard tips fitted to every port — the one design change that physically keeps a bee's tongue out of the nectar instead of merely discouraging it.
photo yet
- Type
- Saucer (dish)
- Capacity
- 12 oz
- Feeding ports
- 4, with Nectar-Guard tips
- Material
- Polycarbonate, brass hanger
- Dimensions
- 8.25" x 2"
- Ant moat
- Built into the brass hanger
- Cover
- Twist-off
Our score: 8.9/10 — an editorial rating, not a customer rating or a test result.
Cleaning access
Twist-off cover, same open-dish base as the HighView. The one extra step is the Nectar-Guard tips: they are small flexible collars in each port, and sugar residue collects exactly where the tip narrows. Budget an extra thirty seconds and buy a port brush alongside the feeder.
What works
- Nectar-Guard tips are a physical barrier, not a deterrent — the mechanism that actually works on bees
- Brass hanger doubles as the ant moat, so ants and bees are both handled by the stock feeder
- Saucer body means no drip, and drips are what draw insects in the first place
What doesn’t
- The port tips need their own small brush; skip that and they clog
- Same 12 oz capacity as the HighView, so not the answer for a high-traffic yard
- Costs more than the HighView for a feature you only need if you have a bee problem
Specifications from Duncraft — Aspects HummZinger Ultra and Amazon — Aspects 367 HummZinger Ultra. We have not handled this feeder — here is what we did instead.
4. Largest included moat
Kingsyard 24 oz Glass Feeder
The 24 oz version of the same idea, with a see-through base so you can read the nectar level without unhooking it. Buy it only if your yard genuinely drinks that much.
photo yet
- Type
- Glass bottle
- Capacity
- 24 oz
- Feeding ports
- 6
- Material
- Glass
- Dimensions
- 6" diameter x 12" tall
- Ant moat
- Included, with stainless steel hook
- Filling
- Wide-mouth
Our score: 8.1/10 — an editorial rating, not a customer rating or a test result.
Cleaning access
Wide mouth, fully disassembles, see-through base. The catch is arithmetic rather than design: 24 oz on a two-to-five-day change cycle is a lot of sugar water going down the drain unless the yard is busy.
What works
- See-through base makes it obvious when the nectar has gone cloudy
- Wide mouth takes a full-size bottle brush
- Stainless hook and a large-capacity ant moat included
What doesn’t
- 12" of glass full of nectar is a serious weight on a shepherd's hook
- Capacity you will not use outside peak season, and unused nectar still spoils on schedule
- Six ports plus a moat is the most parts to wash of any feeder here
Specifications from Kingsyard — hummingbird feeder range and Walmart — Kingsyard Glass Hummingbird Feeder, 24 oz, ant moat included. We have not handled this feeder — here is what we did instead.
What we’d skip
Tiny decorative moats that hold a tablespoon of water
A moat's only job is to still contain water on the hot afternoon when ants are marching. A shallow decorative cup evaporates dry in a few hours, and then it is not a moat, it is a small ornament with a bridge through the middle of it — and worse, one you have stopped checking because you believe the problem is handled. Capacity is the specification. Anything under about half a cup is buying you a checking habit rather than a barrier.
Common questions
Frequently asked
What is the best ant moat for a hummingbird feeder?
One that holds enough water not to dry out — the Trap-It publishes three-quarters of a cup, which is more than most. Better still is a feeder with a moat built in, which you cannot forget or lose.
How much water does an ant moat need?
Enough to survive the hottest part of the day. Half a cup is a sensible minimum; three-quarters is better. Capacity is genuinely the whole specification.
Can I make my own ant moat?
People do, from a small container with a hole through the middle. The same rule applies: it needs real water capacity and it needs plain water in it. A homemade one that holds a spoonful is no better than a bought one that does.
Do ant moats work on all feeders?
On any feeder that hangs free from a wire or hook, yes. On a pole-mounted feeder, no — ants walk up the pole and bypass it entirely.
Sources
Where this came from
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By Scooter M.
an enthusiast who's genuinely into this. I read the manuals, compile the published specs, and do the math. No lab coat.
Published September 1, 2026