The chickens, ducks and rabbits love when I put grass clippings in with them. I have a lot of grass but the supply is not meeting the demand. I can get grass clippings(I work in the garbage industry) but I worry about not knowing where it comes from and if pesticides are used. Is this a valid fear? There are lots of people that use pesticides--I dont. I know it dries and is said to be safe after that, but safe for animals to eat?