I have been told that it's ok for my pup to eat grass, sticks, pollen, and all else in the yard cause it is like them eating veggiesand he will poop it out, but then was told no never let them. Don't get me wrong, I dont just sit back and let him go at it but he is like a vacume when we are outside. Especially with the pollen. He loves it! Should I keep freaking out when he constantly does this or can I relax a little?