Hmmm...this article says garlic is NOT good for dogs. And I presume the recommendation of Neem
Oil for fleas is meant for external, topical use only, as in shampoos and rinses.
Delicious for us, Dangerous to Dogs; Foods to Keep Away From Your Dog
Most of us who live with animals know that chocolate and dogs do not mix. But there are many other harmful foods lurking in our pantries and fridges – seemingly innocent vegetables, fruits, and other edibles that may be delicious to us, but are dangerous, and even deadly, to our dogs.
To learn more about what foods are and aren’t safe for dogs to share with us, we consulted veterinary nutritionist Joan Weiskopf, author of Pet Food Nation: The Smart, Easy, and Healthy Way to Feed Your Pet Now (Collins). A breeder of champion Bedlington terriers, Weiskopf is a font of information on the subject of what foods are and aren’t safe for dogs to eat, and has a thriving business consulting by telephone with clients about individual canine diets.
Take onions and garlic, for instance. These culinary staples are used to create any number of delicious recipes from all over the culinary map. The trouble is that onions and garlic cause serious health problems in dogs. "Onions and garlic both contain N-propyl disulfide, which destroys red blood cells, leading to hemolytic anemia," Weiskopf says. And despite garlic’s longstanding reputation as a flea repellent, "There really is no scientific proof that garlic prevents fleas." (What really works to prevent fleas is Neem oil.)
What if Spot scores a bite of the kids’ pizza, or a lick of Ragu spaghetti sauce? Or what if you’ve made chicken soup with onions, and you’d like to ladle some over your Friend’s bowl? Don’t panic, Weiskopf advises. "Nothing’s going to happen. What you don’t want to be doing is chopping raw onions into your dog’s bowl! A little onion or garlic is fine once in a while; a lot is not a good thing."
Be careful with onion and garlic powders, as well, or any product containing them (i.e. chips), for besides being more concentrated, powdered onion and garlic also contain salt. "Salt preserved with anti-caking agents is bad," Weiskopf says. "I prefer Celtic sea salt because a little goes a long way, plus it contains all kinds of good microtrace nutrients. But sugar is a no." Red pepper, on the other hand, is good for dogs with arthritis because of the Capsaicin it contains; other spices recommended for dogs with joint swelling are "all the yellow spices: turmeric, cumin, and curry," Weiskopf adds...cont'd
http://www.fetchdog.com/learn-connect/dog-resource-library/nutrition-supplements/Delicious-for-us-Dangerous-to-Dogs-Foods-to-Keep-Away-From-Your-Dog/D/300600/P/1:5:55:602/I/AR000010760