is there any natural looking substrate that, if ingested, will pass through the digestive system naturally and without any problems?
or wat about natural look substrate that is too large to be ingested.
i was thinking about zoo meds clay,, and etc.
does any such thing exist? because i mean in pakistan and india, there is alot of hard packed clay that occaisionally gets loose and i always wondered if animals there ingest that stuff.
p.s. i would NEVER use any of that substrate, i plan on paper towels only, cause of the whole "just to be sure" factor


