| Company | Location | Phone |
| Church & Dwight Co. | Princeton, NJ | 609-683-5900 |
| Clorox Co. | Oakland, CA | 510-271-7000 |
| Combe, Inc. | White Plains, NY | 914-694-5454 |
| Dad's Products Co., Inc. | Meadville, PA | 814-724-7710 |
|
Friskies
Pet Care Co. (Netle USA, Inc.) |
Allentown, PA | 610-395-3301 |
| Golden Cat Corp. | St. Louis, MI | 314-982-2400 |
| Hartz Mountain Corp. | Harrison, NJ | 201-271-4800 |
|
Heinz
Pet Products (Starkist Foods, Inc.) |
Newport, KY | 606-655-5700 |
|
Hill’s
Pet Nutrition (Colgate/Palmolive Corp.) |
Topeka, KS | 785-354-8523 |
| Iams Co. | Dayton, OH | 937-898-7387 |
| Kal Kan Foods, Inc. | Vernon, CA | 323-587-2727 |
| Merck & Co. | Rahway, NJ | 732-594-4000 |
| Nabisco, Inc. | Parsippany, NJ | 973-682-5000 |
| Nestle USA, Inc. | Glendale, CA | 818-549-6000 |
| Novartis Animal Health US, Inc. | Greensboro, NC | 336-387-1000 |
| Quaker Oats Co. | Chicago, IL | 312-222-7111 |
| Ralston Purina Co. | St. Louis, MO | 314-982-1000 |
| Sergeant’s Pet Products | Omaha, NE | 402-595-7000 |
| Tetra/Second Nature | Blacksburg, VA | 540-951-5400 |