| Business | Phone |
| Ayres & Assoc Investigations 2710 N Center Rd, Saginaw 48603 | (989) 249-6408 |
| Eagle Research Saginaw 48603 | (989) 791-0080 |
| Kerby Bailey & Assoc Inc 5800 Gratiot Rd 101, Saginaw 48638 | (989) 790-0450 |
| Teter Security Assoc Inc 7546 Gratiot Rd, Saginaw 48609 | (989) 781-7100 |