I've responded to questions and tips several times regarding giving garlic to pets for flea control or assorted other reasons, but maybe it will be more helpful if posted as a tip that might reach more folk? Please consider reading up about Heinz-Body anemia before you make the decision to give garlic in any form, or anything in the alliums family for that matter, to a pet. Personally, I wouldn't risk the health of my pet when there are other safe alternatives available. Here are two really good links to begin your homework with:
By Deeli from Richland, WA
Check out these photos.
I buy garlic pills (the gel-caps) and poke a hole in one gel-cap with a needle and squeeze the oil into my dogs food about 5 days a week.