title: How to remove all catalog products in Magento
body: <p>I've  trying to import a products list to magento. In the firsts test, I got success, but the products were not showing up in back or front office.</p>
  
  <p>After redo the import process few times, I found out that I have the imported products on database, but, still not showing.</p>
  
  <p>If I access de Catalog > Manage Categories > Default Category -> Category Products I may see the imported products.</p>
  
  <p>Later on, I found a error in my import file ... and I may correctly import products</p>
  
  <p>instead .... I have found conflicts in the 'sku' field ...</p>
  
  <p>those first products are not showing up yet, but they are still on database... </p>
  
  <p>Question: How do I remove those products if I can't access them ???? 
  May I do that direct on database ? deleting the rows can generate other issues ?</p>
  
  <p>any clue will be appreciated !</p>
  
  <p>Magento ver. 1.7.0.1</p>