We entered Canada at the POE above Oroville Washington. Officer was professional and asked the expected set of questions before giving us advice on the travel time to our destination and sending us on our way.
I am convinced that staying in the box.....no guns, no products that are of concern, no illegal substances, no large quantity of cash, and a planned trip gets you a clean bill.
Re-entry into the US was at the first POE off C5. We were subjected to an agricultural search. Process was just that, a process. The agricultural inspection area is not configured for RVs. They have you pull over to the curb between two cones and expect you to know that you need to leave your vehicle and present everyone in your group including your animals to the officers inside the building. You fill out a declaration form. Our agent noted that the entry web site was out of date and gave us a flyer. After the search of our vehicle and coach, they informed us we should have told them about our eggs, which are considered meat. Eggs are not a problem now, but were when the bird flu was a concern.
Experience does make a difference. We reviewed the Canadian entry facility with Google maps, but did not review the US POE prior to entry. Our mistake.
It was also interesting to come back into CA. No problem with salad lettuce and tomatoes, which we had been fastidious about not taking into Canada or back into the US.
Everyone travel safe. Pat