| Business | Phone |
| United Protective Svc 4201 Dunn Rd, Hazelwood 63042 | (314) 298-2574 |
| Soi Security 12208 Missouri Bottom Rd, Hazelwood 63042 | (314) 731-8133 |
| Security Innovations Inc 320 Brookes Dr, Hazelwood 63042 | (314) 731-1443 |
| Guardsmark Llc 320 Brookes Dr # 104, Hazelwood 63042 | (314) 731-3511 |