Wal mart's "led strip" contains one led on each side of an acrylic rod. The most glow that you can get is about two inches, if you are in a dark cave. Dont waste your time with it.
If you're looking for lights, check out Oznium.com They have been a trusted company on these forums for a long time now. Great product and great to deal with as far as customer service. So yea, don't waste your money on wal-mart knock off, and go with the good stuff.