Picky Eaters

This process to switch to canned has been more frustrating than I thought it would be. My oldest will eat whatever I put in his bowl. The youngest is finicky and will eat some flavors but not others. The middle child is the problem child. She won't eat any of it. She won't even taste it. She sniffs it and then proceeds to paw the floor all around it like she's trying to bury it. I even tried to entice them both with a little canned tuna on top. Neither would touch it. I tried adding their dry food on top and also tried to mix a little in their dry food. They wouldn't touch any of it. Any other advice to entice them to at least taste it?

My cats always ate wet and dry so I was able to slowly reduce the amount of dry until they weren't getting any dry, just wet.  

Maybe some of the tips in this article will help you:  http://www.thecatsite.com/a/transitioning-free-fed-kibble-kitties-to-timed-meals

My oldest cat is ungodly picky. He wont eat any wet food. I tried literally every flavor/brand/type and every treat, nothing worked. Strangely, he likes raw, but only with certain toppers, so our compromise is that he eat some raw, and a small amount of high quality kibble.

I've had a lot of success with the Bravo freeze dried treats mine go nuts for the Salmon and the Marines Meadly. They also like the Orijen freeze dried dog treats in duck and boar (its just meat tho). Some people have a lot of luck with fortiflora, but mine don't like it.