My husband's coworker is my chicken expert. I'm not sure I trust all his advise. Would it be ok to add a 5x5 square of sod to my brooder? My chicks are 3 weeks old. Our expert says they will go crazy over the chance to peck at the seeds/bugs/worms in real sod. I'm thinking they will probably like it. I'm worried, though, that it might make it hard to clean the brooder or make my chicks sick if they eat the wrong thing.