Removing Sample Data after installation

I have installed version 2.2 with all the sample data and got it working like I want. Now I'm ready to start inserting my own data and get it all running. What is the easiest way to get rid of all the sample data?

I could do it manually but that is going to take me quite a while. I can delete product categories but I notice that it gives me warnings about child categories and products still attached. Of course I could delete every product one by one but that takes time. If I delete the category despite the warnings then I leave my database cluttered with all these extra products.

[stan]

No need to worry about the warnings. Deleting the categories will quite effectively remove the products within them from your system. The warnings are there just let you know that there are sub-categories and products within the one you're deleting.

-- stan c",)