keeping satanic books in the home

Hello, 

One of the first things the Lord put on my heart after becoming a Christian about 2 years ago was: get rid of everything in our home that is dishonouring to the Lord.

There were many things we got rid of. But for some reason my husband didn't want to part with his Stephen King books and a book called Urantia (this book claims to be the next instalment of the Bible, and claims that Jesus was one of many "gods", and I believe is satan's next big attempt at false religion). 

I have cleansed our home of everything I could find that is dishonoring to God, but these books remain, and I cringe to know they're still here. 

My question is, is it ok to get rid of these books "quietly"? I doubt my husband would notice they are gone, but don't know if it would be stealing to get rid of them without his knowing. I don't want to have him feel disrespected, but also the Lord made it fairly clear that He wants these things gone. 

What should I do? 

Thank you, 

Jenny