Whenever I put food out for Daisy she takes a mouth full and goes to the pee pad to eat it.. That's just gross!!!!

Why does she do this? I've noticed that sometimes she even wants to lay down on it.. It's not just when it's a clean one either.. It could be peed on and she'll still do it.. I never leave poop.. I always take that off as soon as I notice that she went so it's just pee, but still GROSS!!!