Ah...chemical reps. Well in So Cal you have a plethora to choose from...some chemical companies focus in certain types of food manufacturing so make sure the one you choose is very familiar with your food manufacturing and sanitation. I've worked with...
- Shepard Brothers
- Chemco
- Ecolab
All in all A LOT of it depends on the specific rep you get for your facility. I know Shepard Brothers and Chemco focus on food beverage including dairy and breweries. Ecolab does everything and they have a huge amount of resources available. However, Ecolab can have some hurdles and red tape as with a larger organization and they can be more costly, depending on the level of service you require. Shepard Brothers and Chemco are family owned outfits and generally have better customer service and response time with things. They generally are less expensive than Ecolab.
Good luck!