| Business | Phone |
| Miami Valley Radon Inc Dayton 45432 | (937) 426-0714 |
| Pro-Test Inc 2663 Orchard Run Rd, Dayton 45449 | (937) 438-5686 |
| Radon Professionals 350 Pleasant Valley Ave, Dayton 45429 | (937) 296-4366 |
| Radon Proffessionals 350 Pleasant Valley Ave, Dayton 45424 | (937) 236-6095 |
| Radon Technology Inc 2091 Miamisburg Centerville Rd, Dayton 45459 | (937) 291-9000 |