After researching quite about helmet fresheners, I settled for the Helmy combo deal from Tiivra and I must say I am greatly surprised at the performance of the little avatar. The fragrances offered by Helmy are really intriguing and effective too. It has been more than 2 weeks now that I have installed one and every day I wear the helmet, it stays fresh and smells charming. So far it has proven itself to be more than effective. It is a must have for every rider who cares about their shield.