my 1 year old sulcata hates the calcium powder with D3 in it. if i put it in his food, he will just refuse to eat that day - even if i mix it in mazuri. but, if i put a piece of cuttlebone in his cage, he'll devour it. i keep cuttlebone in his feed bowl - a big chunk of one cuttlebone - probably twice a week. but, like i said, he always refuses the calcium powder with D3. my concern is that he's not getting the D3 portion. any suggestions? he is inside for the winter now, so not getting sunlight. he looks great and smooth, so not too concerned, but just am open for suggestions. i've tried mixing that stuff with so many things and he always knows it's in there.