WIC in California?

Does anyone utilize the WIC program in California? I'm 22+3 and figured this is perfect time to apply now that I'm kind of crunching down on money.

Could anyone give me some insight on how it's helped you and I've heard some horror stories about cashiers being rude at the store when you use WIC, is this true? For those who have WIC in California do they still give out paper checks or have they transitioned to using the card (which I heard was easier since you get less attitude from workers in the stores)