The Odour Fogger Car Interior & Aircon System Cleaner is a highly effective sanitizer treatment, which eliminates harmful bacteria and unpleasant smells from the air conditioning system. It is proven effective against bacteria including: enterococcus hirae aspergillus niger. This product is quick and easy to use and requires no tools. It does not only clean the entire aircon system but it also absorbs into all of the internal fabric of the vehicle to provide a long lasting interior fresh sweet fruits fragrance. When your aircon is switched off during winter times, bacteria can grow in the pipework causing unpleasant odours, hay fever symptoms and other allergic reactions.