Remove the smell of cat urine from wood by scrubbing it using a solution of water or undiluted white vinegar and hydrogen peroxide. Spray the solution on, wipe it off and repeat until the odor is gone. Use a black light, if necessary, to locate hidden stains on the floor.
To remove dry urine odor from wood, tile and other surfaces, create an effective cleaner for urine odor removal by blending one part hydrogen peroxide with two parts undiluted white vinegar or water. Spray the solution liberally on the area, wipe it up and repeat. Repeat several times to remove the odor. Complete removal keeps the cat from sensing the odor in the area and urinating there again.
For harder to remove cat urine odors, invest in an enzyme cleaner. This type of cleaner uses uric acid to remove odors more deeply ingrained in the area. Mercola.com recommends Urine Off or Nature's Miracle, both enzyme cleaners that remove tough cat urine odors.
Because cats like to return to the same areas to urinate repeatedly, in addition to removing the scent, applying a few drops of lavender, tangerine or lemon essential oil can deter the use of the area in the future and helps mask any residual odor that the cat may be able to smell.