Hello yesterday from petshop i buohgt Repti Calcium without D3 but when i open it i saw that it was little opened already and inside can go air. Is there expiration date ? or is it good to give to my cham ? i not have chance to give back.
There should be an expiry date on the container.
Yes, air exposure could reduce its shelf life, but its probably still good to use (if its not past its expiry date)