Odour neutralising agents are a successful and popular method for the removal of problematic smells created within hydroponic grow room environments. Supplying eco-friendly odour solutions to commercial industry since 1995 ONA products are used in extreme locations such as sewage and rendering treatment plants, where offensive aromas are often overwhelming. Gel Pots can be used to dispense neutralising agent in two ways. Peeling back the seal and allowing the fragrance to passively penetrate the environment will take care of nuisance smells for most small grow rooms. However, the addition of a Breeze Fan, improves its coverage and effectiveness, intensifying its odour killing properties against the more pungent smells associated with larger indoor gardens.