Hiding "Test" products from template blogs in marketplace

Hi,

On my multisite i have installed a blog, which im using as blog template for new blogs.
In this blog i have some "Test" products, which is showing up on the marketplace.

I want to know if there is a way to hide these product. Hide products from blogs used for template, or maybe just hide products, which contain the word "Test".
Could this be possible?

Best regards,