| Business | Phone |
| A Guard Dog Kennels Reg'D 12273 Yonge St, Richmond Hill L4E 3M7 | (416) 323-4000 |
| A Guard Dog Security Ltd 12273 Yonge St, Richmond Hill L4E 3M7 | (905) 882-5511 |
| National Security Enforcement 120 Newkirk Rd, Richmond Hill L4C 9S7 | (905) 883-9966 |