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These companies serve Diamond Bar from nearby bases in towns including Anaheim, Upland and Corona.
24 companies listed · 2 open 24/7 · 13 open weekends · 23 rated 4.5+ · 8 show a license
Data verified October 18, 2026
Listed for homeowners in and around Diamond Bar, CA, these 24 companies treat pest problems in homes. The pests each company names, its licensing claims and its hours come from its own site; ratings and the quoted comments come from public reviews.
The 24 companies on this page are rated from 4.3 to 5.0 across 9,386 reviews; 18 have 50 or more reviews and 23 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (91%), responsiveness (85%) and punctuality (82%). The topics that come up most in reviews of the companies on this page are "price", "communication" and "estimates". 2 are open around the clock; 13 are open on Saturdays and 3 on Sundays. The services the companies on this page list most often on their websites are ant control (3), bed bugs (2), cockroach control (2), general pest control (2) and gopher control (2). 8 show a license on their websites and 4 have a BBB rating of A or A+. Domain records put 13 websites of the companies on this page at ten or more years old; the oldest dates from 1999. 2 offer emergency call-outs; 2 offer financing or payment plans; 12 give free estimates; 7 are family- or locally-owned and 7 list coupons or special offers. 1 has Spanish-speaking staff. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
8 of the 24 listings on this page show a license on their websites. Pesticide application is licensed by the state, and the register is public, so ask for the number and check it before anyone treats your home.
