These non-slip strips were just what I needed. My old wooden steps are outside and go down from the backdoor to a concrete pad. They sometimes get slippery when it rains. I wanted a simple and cost-effective way to improve the traction for myself and my dog.
I applied the strips when I knew the weather would stay above 50 degrees and without rain. Because the steps (40 inches) are wider than the tape strips (24 inches), I cut several tape strips in half and extended coverage to 36 inches per step. Cutting was simple: I used a ruler to measure, a pencil to draw a line (on the backing), and a box cutter to cut it with a piece of plywood under it.
I applied the tape about 3/4 inch from the edge of each step. I applied the tape by peeling one edge, placing it down where I wanted, and then smoothing it down with my hand as my helper removed the backing. Once all the steps were done, I did the same for a portion of the concrete pad. I was pleasantly surprised that the tape adhered to the wood and the concrete. As a backup plan, I did have some silicone adhesive handy for the concrete and small nails ready for the wood, but did not need them.
So far, I am very pleased with the product. Traction is excellent even when wet, and the glue is still holding firmly. I just hope they are as helpful when it snows.
UPDATE 12/31/15: Once it rained enough, the tape no longer sticks to the concrete. I'll try some silicone-based glue once the weather is warm and dry. The wooden steps are still fine.
UPDATE 1/11/16: I was contacted by the seller. He stated that the strips should stick to the concrete, and offered to send another pack of strips for me to try - when the weather is warm and dry again, which might be a while. In the meantime, I must say that I was pleasantly surprised and even impressed by their exceptional customer service and support.