I used this for the first time last year and had an amazing yield of tomatoes and peppers. It cut weeding to almost nothing. It was definately able to be used a second year except I didn't have a place to store it. I am ordering again this year.
I have used this stuff for three years now, and can't belive how much it improves my yeilds. It makes such a different up here in northern minnesota, without it my tomatoes just don't do well.
We have used this plastic in the past two years. It helps the plants grow and the production of tomatoes was great!