Voles or Moles? Diagnosing Lawn Damage on a Septic Drain Field

A newly seeded drain field area grew well then went bare, with soft, tunnel-riddled soil but no septic odor.

Likely Culprit: Moles

• Moles tunnel, lifting grass roots to dry out.
• Voles eat roots but create surface runways, not deep tunnels.

Immediate Actions

• Water thoroughly to settle lifted turf.
• Roll if severe to re-establish soil-root contact.
• Maintain pH 6.5 and fertilize on schedule for grass type.
• Try repellents to encourage relocation.

Mole damage is mostly cosmetic; good watering and rolling minimize loss. Verify pH and fertility for optimal recovery.