comments:
Accomplished_Paper13 posted on r/isopods20w
This seems like a possible alternative I can't vouch for it being safe, but it says there aren't any chemicals added and that it's 100% oak. Mix them with some water (I usually add some nutritional yeast to kickstart decomposition) and you're good to go!
CombatLightbulb posted on r/isopods44w
No problem! The more information you have the more you can help me troubleshoot. The pellets say chemical free and 100% virgin oak hardwood and are intended for smoking which is exactly what Aquarimax said. I did find a more recent video that said they moved away from using them because they take too long to decompose into something the pods can actually use though. This is the listing. https://a.co/d/3sz02ln