I did that with a cart, the strips are very brittle and have many "glue" spots. The best tool for the job was not a DE blade (yes, I tried that) but the blade of a small Swiss Army knife .
For safety sake, I was going to recommend a Single Edge blade, like the kind we use with Gem razors, and also the kind of blade used for scraping paint off of glass. But any small knife would work just as well.