Sorry I'm late! Home Hardware does indeed sell soil testing kits; but they only check for pH, Nitrogen, Potassium and Potash. Here are a couple of SKU's: 5059-250 and 5059-198 Pressure treating and creosote are definitely different things. Creosote usually means coal tar creosote. Up until 2004, the common treatment in "pressure treated" was CCA, Chromium Copper Arsenate, which contained two bad elements, Chromium and everybody's favorite chemical, Arsenic. After Dec. 31, 2003 the industry voluntarily switched to a different Copper based pesticide which is considered much safer.