Home › Top 5 Pet Groomer in O'Fallon, Missouri Find best Pet Groomer in O'Fallon, Missouri, with all necessary contact information, including addresses, phone numbers, working hours, map locations, and website links. Paws & Relax Pet Spa US, O'Fallon, MO 633661330 Sunburst Dr Dames Bark Grooming US, O'Fallon, MO 63366460 Hwy P Diamonds n the Ruff US, O'Fallon, MO 633661252 Bryan Rd Bark Avenue Play and Spa US, O'Fallon, MO 633661078 Tom Ginnever Ave Yuppy Puppy Pet Spa - O'Fallon (MO 63368) US, O'Fallon, MO 633682301 Technology Dr #101