The Squash Air Freshener gives your vehicle the most continuous and longest lasting fresh smell of any air freshener we have ever tested. The special long lasting formula has a slow release that allows you to get 6 – 8 weeks from one cartridge. This original scent (Squash) from Squash Air has made this company one of the leading scent companies in Japan and worldwide. Squash has released many new scents, but the original Squash is still their best selling product