Leela
http://www.sugarglider.com/gliderpedia/index.asp?EggShellCalcium ( sorry i don't usually post links on here you may have to copy and paste it into your browser )

Leela
Mine is the same way she snubs even her most favorite things if i put the store bought calcium powder on it. So i tried this http://www.sugarglider.com/gliderpedia/index.asp?EggShellCalcium she doesn't seem to be bothered by the taste at all now and i have some peace of mind that shes 1 eating her food and 2 i made it so i know there isn't anything wierd in it. A local sugar glider rescue place told me the gliders need more than what crushed egg shells can provide them, I'm no expert but if they won't eat the other stuff it's not going to benefit them at all at least i know she's getting some added calcium this way.

imapackrat
Mine are the same way. I mix it with a bit of honey.