Originally Posted by
island rehabber
If you have a can of Esbilac powder with an expiration date of 10/2021 you can USE IT. The manufacturer corrected the issue that caused such horrible problems last year (see banner above) and any can with that expiration date or LATER is fine. I used it for mine this past spring and so did other rehabbers I know, but I did add Ultra Boost to the formula. Rats' digestion is somewhat different from squirrels' (less delicate, and they are omnivorous and nocturnal), so IMHO you can use the Esbilac.