I got an email back from natura today (after asking them which cans, i.e. date or serial number wouldn't have garlic in them). They said that cans with an "09" experation date and later should be garlic-free due to the 2 years from production expiration date.
I went ahead an sent in my large food order (one of the large online sellers was having a 22% discount) and ordered the cat beef cans and the dog chicken/turkey cans...Hopefully the dog cans will be garlic free (that seller had removed gralic from the ingredients list also). We shall see. I wish that I could have waited longer to order to ensure that the dog cans would be garlic free, but with 22% off, I decided it wasn't worth the wait.