My oldest cat (19) just got out.
Last time she ate grass she got really constipated. She was fine after a few hours.
I'd rather her not go though that again. She got out through a door that a guest had left open and we didn't notice. She was probably out for a good 10 minutes and she loves to eat plants whenever she can. She is a strictly indoor cat and has always been her entire life.
Anything I can do as a preventative?