This probably won't help you since it sounds like you've decided on indoor-potty training them, but
if you decided to switch to outdoor, then you're able to pick up the poop right away
That's the route we took - outdoor potty. Casie is horrible with eating poop too. She eats it like a magic show. Even when we're out and she poops, there's been a couple times where I'm strugglnig to open the poop bag and forgot to pull her away from the poop, the poop disappears literally within a second!