Gosh, wrong upper post.
This is what i wanted to write:
My 4 month old baby Jackie responds to ridirecting well. When she bites my feet (especially when i'm in a hurry to work) i usually say "stop it". When she does not stop i pull her away, say it again to her face and give her the toy. That helps. I noticed that when she bites my feet now and when i say "stop it" she usually looks for the toy and grabs it.
I recently bought her something to chew as well. It somewhat of a dried skin (completely naturally) that is great for chewing. And this is not about redirecting tehnique. She can chew that for hours and it's like she wastes all her 'chewing energy' for that skin. Later on she does not chew my feet.
Just a suggestion. That worked with me.