Centipedes/Millipedes in Slab Home: Seal and Reduce Moisture

Centipedes/millipedes entering slab-on-grade home in South Dakota. Can't seal 100% (cracks in slab). Indoor pesticides unhealthy.

Best Approach

1. Exterior perimeter spray (Termidor etc.)—DIY saves money.
2. Indoors: botanical insecticides only if essential.
3. Reduce moisture: dehumidifier, fix leaks.
4. Sticky traps monitor entry points.

Acceptance

Occasional invaders are normal. They don't breed indoors. Focus on dry, sealed home.