ok i bought some today, but there is sand or poop in the bag lol...do I need to separte it? I am guessing probaly as I dont want my geckos to get impacted. Yes i am dumb at times
That sandy stuff is most likely frass (mealworm poop). It's not a big deal. You can separate the mealworms from the frass with a strainer or something like that if there's too much and it bothers you.