How ONA Works. Simply remove the cap, or punch several small holes in the cap and place in desired location. The ONA Block measures 3″ x 3″ and will fit in most places.
The ONA Block will release its powerful odor neutralizing agent and keep the location free from undesirable odors. Replace as necessary.
Available in four scents: PRO, Fresh Linen, Polar Crystal, and Apple Crumble.