HG eliminator of all unpleasant smells at source was specially developed to remove unpleasant odours in a biological manner. This product does not mask the smell but rather removes the source of the smell by means of natural enzymes and microbes, so that the unpleasant smell does not return. The source of the odour must be removed beforehand whenever possible. Work on the remainder which cannot be removed by spraying it liberally. It is important that the product is applied to the source of the odour in order that it can be completely removed. Depending on the porosity of the surface, the source of the smell will take 20 minutes to a few hours to disappear. The odour will have disappeared by the time the surface treated is dry. HG Odour Eliminator for all surfaces. Removes unpleasant odours effectively and organically thanks to natural enzymes and microbes. These smells can be caused by urine, excrement, vomit, pets, nicotine, fruit, vegetables and many other sources of odours. The odour eliminator of HG deals quickly and effectively with all unpleasant smells. Works within 30 minutes.