The OCD cube lasts for a long time, especially when the OCD cube is added to places like inside ducting pieces where moving air can dry out traditional smell blocks; the cube is resilient and does not budge from its odour protection duties. They are great in toilet/bathroom areas and cars also.\n\n The cube has a super slow-wicking system which ensures a consistent output of odour-neutralising DEO MAX and, for the OCD Lemon, Bubblegum, Orange and Fresh linen, a steady fragrance into your odorous areas.