Arch Pest ServicesPest control company in O'Fallon, MO

Arch Pest Services is ranked #46 of 111 pest control companies in O'Fallon by CR Score, with 55 out of 100 as of November 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

Arch Pest Services is open Monday to Saturday. Its listed hours are Monday to Saturday, 8 AM – 5 PM. On Saturdays it is open 8 AM to 5 PM and closed on Sundays. Hours come from the business listing; holiday hours may differ.

Serves O'Fallon and 11 towns within 25 miles: Saint Peters, Weldon Spring, Dardenne Prairie, Chesterfield, Lake Saint Louis, Saint Charles, Ellisville, Wildwood, Maryland Heights, Ballwin and Wentzville. The list is based on the business's location and the usual service radius for pest control. Confirm your address is covered when you call.

Arch Pest Services has a rating of 5.0 from 12 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

Call Arch Pest Services on (636) 486-5208. The business is at 1496 Brittany Cove Dr, Cottleville, MO 63304, O'Fallon, MO. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.