how to prevent a particular post category showing up in google reader blog feed

I am using a responsive slider plugin that uses posts to populate the image slider on the home page.

So I have setup posts in a category called "slides" expressly for using the featured images for the image slider.

I have set them up so that they are not listed on my blog page, and they are not showing up in my blog feed.

However in google reader, it is showing all the slides? Is there a way to block this from happening? a setting to remove the "slider" category completely from my feed?