These ag stations are typically so full of derp it's unreal. For instance, just south of Las Vegas on the I-15 you will hit the NV/CA border & just beyond that a CA Ag Inspection station. It's a total joke as the vast majority of the fruits & veggies sold in Vegas come into Vegas from CA. They're not protecting anything, just wasting money & hassling the public. Commercial vehicle inspections for produce are one thing, stopping Joe bag-o-donuts is something else entirely.
Oregon story: Friend of mine buys some fresh cherries at a roadside stand somewhere around the Columbia River part of the state. Travels only a few miles south of that point & runs into a Ag Station. Friend tells them he just bought some cherries right up the road.... they demand he hand over the cherries.... WTF. Friend opens his door, puts bag of cherries on the ground, & promptly smashes the you know what out of them.... then hands them over. BRILLIANT on his part as you just know this inspector's brother in law is the cherry seller up the road & the same cherries get sold multiple times after they're confiscated.