I have a post colic op horse that can't stand on straw because he eats it, and my yard doesn't want to use shavings. Any suggestions for alternative bedding?

Ive seen honneycomb mats before and i personally think they look great

I can't remember what it's called but there's these boarders at my barn and they have like this weird like sand stuff but it's not sand? Idk maybe search around and see if you can find something like sand but isn't sand so that the horse doesn't eat it