Do anyone know the easiest/best way to recycle newly cut turf(sod) as I have just cut out some flower beds and have loads of turf as a result. I want to reuse it if possible as it has a lot of good soil attched to it. It's currently grass side down in stacks.

I thought I heard some time ago about an "off the shelf" mixture which kills the grass and roots thus breaking it down - but that's all I can remember.

thanks