The British biologist J.B.S. Haldane was the first to quantify fitness, in terms of the modern evolutionary synthesis of Darwinism and Mendelian genetics starting with his 1924 paper A Mathematical Theory of Natural and Artificial Selection.
Get $0.89 per sq ft basic Pergo Laminate installation. Can't be combined with 10% off Pergo Laminate Flooring promotion. Requires minimum purchase of 250 sq ft and Lowe's purchase of eligible flooring along with moister barrier and underlayment.
But I can tell you I used a tool very similar to the one pictured above (found on Amazon for about $5). I paid about $2.98 for it at Loweâs (you can see it in the photo below laying on the shower floor). The idea is to go over all the existing grout and wear it down a bit. You can also use a power tool for this, but I opted for the cheapie method.