Control solution for Relion Prime Meters?

My control solution has expired. Since my son is type 1 diabetic, I realize how important this is at least on his side of the house, but what about for Sophie? Wal-mart doesn't carry the stuff. How do I get it? All suggestions welcome. Thanks!

 

At this link: https://www.relionbgm.com/prime-faq It says: "Q: How do our customers receive control solution? A: Call customer service at 855-776-0662, 7a.m. to 7p.m. Central time, 7 days a week."

I VERY rarely have had to use control solution. I have only used it on occasions where the numbers started looking a little wonky so I wanted to make sure the strips were okay. I think some people test a strip in each new vial of strips to make sure it is within the range, but I don't know how many even use the solution that much.

 

When Rover threw me a wonky number and I wanted to do a control test, I just tested myself. It is a human meter after all.