Chiggers are tiny mite larvae that thrive in tall grass, weedy edges, and shaded yards across the Chicago suburbs from late spring through early fall. You almost never see them, but you'll feel their intensely itchy red welts hours after walking through a yard, forest preserve, or park.
What Do Chiggers Look Like?
Chigger larvae are extremely small — about 1/150 of an inch — and bright red or orange. They're nearly invisible to the naked eye. Adults are larger harmless mites; only the larval stage bites humans.
Where Do Chiggers Hide?
Chiggers cluster in tall grass, leaf litter, weedy fence lines, garden mulch, and shaded damp lawns. In the Chicago area they're most active in suburban yards backing up to forest preserves, near creeks, and in any unkempt vegetation.
Signs of a Chigger Infestation
Intensely itchy red welts — often in clusters around the ankles, behind the knees, the waistband, or other tight-clothing areas — appearing 3–12 hours after time outdoors. Welts can last a week or more. You will not usually see the chigger itself on your skin.
Health Risks of Chiggers
Chiggers don't transmit disease in Illinois, but the bites cause severe itching, secondary skin infections from scratching, and disrupted sleep. People with sensitive skin can develop large inflamed welts.
How Sleep Tight Treats Chiggers in Chicago
Sleep Tight treats chiggers with a targeted yard treatment focused on tall grass, shaded edges, and mulched beds, combined with habitat reduction recommendations (mowing, clearing leaf litter, trimming back vegetation along property lines). Most yards stay chigger-free for the rest of the season after a single visit.
Need help with chiggers in Chicago?
Sleep Tight Pest Control offers same-day chicago general pest control across every Chicago neighborhood and suburb. Call (773) 240-5932 or get a free quote online.
Frequently Asked Questions
How do I tell chigger bites from mosquito bites?
Chigger bites cluster in tight bands around ankles, waistbands, or behind the knees and itch for a week or more. Mosquito bites are isolated, raised, and fade within 1–3 days.
Do chiggers burrow under the skin?
No — that's a myth. Chiggers inject a saliva that liquefies skin cells, then feed on the fluid. The welt is your body's reaction; the chigger drops off within hours.
How can I prevent chigger bites in my Chicago yard?
Keep grass mowed short, clear leaf litter and weedy edges, wear long pants tucked into socks in tall vegetation, and shower immediately after yard work. A professional yard treatment from Sleep Tight clears active populations.
How long does a yard treatment last?
A single targeted treatment typically eliminates chiggers from a Chicago-area yard for the rest of the active season (through October). Heavily wooded properties may benefit from a mid-season touch-up.