Me...I'd start daily "training sessions" with lots of opportunities for her to be tempted, and me holding a spray bottle (water pistol) of water/lemon juice, etc. (something that REALLY gets her attention). She's already "learned" to eat 'em, so unlearning will take a bit of effort, but the second she gets the "urge" and makes a move...squirt, squirt
. Labs are smart...ya might have to "conceal" yourself or the sprayer...but she'll get the message soon enough. Good luck!