Benefits of "chew sticks"?

Question

i was in the city yesterday, (NY) and my friend gave me a chew stick. i was surprised by the strong taste and i actually liked it alot. so i went home and did a little research on them to find out that they're actually "natures toothbrush". they say that they have all the benefits of brushing your teeth with a toothbrush and all these other great benefits. what do you think and do you think alot of it is just garbage? (im planning on buying some and before i do i want to know if anyone thinks its just a scam.)

links to some info

http://www.houseofnubian.com/IBS/SimpleCat/product/ASP/product-id/30166.html

http://www.ecrater.com/product.php?pid=1552301

Answer 1

These are the only human ones I could find:

http://www.herringtoncatalog.com/ts219.h...

the rest were all for dogs.. hmmmm