I bought a Dr. Catsby Bowl for Whisker Relief for my kitties and now they lick the bowl clean instead of leaving food in the corners. It saves me time too because now I don't have to spend time washing and scraping off the dried chunks of cat food left around the edge.
Visit Dr. Catby's website for more information. https://drcatsby.com/
Here's the affiliate link if you would like to order your kitties a Dr. Catsby Bowl to protect their whiskers.