1. Remove the cap at the bottom of the aerosol can. 

2.  There is a ring connected to the bottom of the cap. Remove this ring and put through the pin at the bottom of the aerosol.

3.  Use the ring to pull out the pin and twist 360 degrees.

4. Be sure to shake the can well for 1 - 2 minutes. 

5. The aerosol is now activated and ready for use.

Note: Be sure to use aerosol within 12 hours of activation.