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The Seasonal Science of Sugar Ants: When, Why, and How to Stay Ahead

by | Jul 1, 2025 | Aspen Pest Control | 0 comments

When Sugar Ants Are Most Active

Spring Surge

The first big wave hits March through May. As temperatures warm, ants start foraging heavily. Rain can drive them indoors too.

Summer Plateau

In June and July, activity may drop slightly, especially in hotter regions. But they are still present and searching for food.

Fall Bounce

September and October bring another surge. Ants prepare for winter and move indoors to stay warm.

Winter Survival Indoors

In heated homes, ants can remain active all year. They are just less visible.

Why Timing Your Treatment Matters

The Egg Cycle Is Key

Even if you don’t see ants, they may be developing. Eggs hatch every 30 to 60 days. Waiting until you see activity usually means the problem is already underway.

Follow-Ups Are Essential

We return in 30 days to hit the next generation. It often takes that second visit to wipe out the remaining colony.

How to Prevent Sugar Ant Problems Year-Round

Outside Tips:

  • Trim back bushes and trees
  • Move firewood away from walls
  • Fix leaks outside
  • Clean up fruit tree debris

Inside Tips:

  • Store food in airtight containers
  • Clean counters and sweep daily
  • Don’t leave pet food sitting out
  • Repair indoor leaks

Scheduling Service

We recommend quarterly service (every 3 months) for most homes. It keeps colonies from taking hold. For food service businesses or recurring problems, we might suggest more frequent visits. We also offer free in-between calls if ants reappear unexpectedly.

Small Ants & Sugar Ants Pest Control in Portland OR and Vancouver WA

Sugar Ant Description

Size

The sugar ant is very small—measuring about 2.4-3.3mm long. They are typically about as small as a pencil eraser. Although they are small, they quickly become noticeable as they swarm around food or stream through your home in a line. 

Color

Sugar ants are typically black in color.

Smell

This might sound strange, but when crushed, sugar ants release an unpleasant, coconut-smelling odor. Sugar ants have a gland that releases this smell and it’s why they are called the odorous house ant.

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