month or two, they’ve had plenty of time to settle in. It feels dramatic when you uncover them, but often it’s simply a bunch of creatures sharing the same little safe spot.
- When their presence is a sign you should investigate moisture
Finding a few millipedes in the yard is normal. Finding dozens under a pot is still pretty normal. But if you’re seeing large numbers repeatedly near the foundation, inside the garage, in basement window wells, or along door thresholds, it’s worth checking for excess moisture.
Look for clogged gutters, downspouts dumping water too close to the house, leaking outdoor faucets, overwatered beds, or mulch piled against siding. Ideally, downspouts should carry water at least 4 to 6 feet away from the foundation. Mulch is best kept a few inches back from the house, and the soil should slope away rather than toward it. Millipedes themselves are not usually