Yes. Always. Where you can get it quickly - clipped to an outer pocket.
Someone suggested taking the clip from a clip-on eyeglass case and taping it so the can rides upside down with the nozzle pointing inwards, then clip it to your strong-side pants pocket. That way when you grab it it will automatically be in the proper position in your hand.
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Last edited by sknhgy; 03-08-09 at 02:32 PM.