write niche content for each products with adsense ads, you should have 15 to 25 articles for each product and in adword select landing pages according to your keywords.

for each article :

your keyword in url : yoursite/product_niche_keywords.html ( page title will be your page name)
your keyword h1 tags ( page title under h1 tags )

use adsense format : 300x250 ads with inline css.

hope this will help in both adsense/adword