Also - WalMart has this great baby gate. They can't climb it as there is nothing to get their little feet in, it's see through and it's inexpensive. This is what I gated Canyon in with the first day in the laundry room. Unfortunately, the gate is still there attached to the frame but it's purpose is none. Anyway, the gate extends 42 inches - didn't know how wide your kitchen opening was but, just passing it along.
Walmart.com: The First Years All Clear Plastic Swing Gate: Health & Safety