I rescue rabbits, so not many of my buns are with me long-term, so I keep them in wire hutches. I know this may not be the most comfortable house for a rabbit but like I said they don't stay with me long. My pet bunnies stay in the house. However I feel really bad leaving them out in those hutches with no stimulation. They get an unlimited supply of hay and food, but I feel like they're bored. I have a pretty big yard that I would like to let them run around in but here's the thing- my dad fertilizes are grass. He doesn't put pesticides down but just fertilizer. If I let my buns run around in it and they decided to eat some will it harm them?