Hello Jessica, A cann will last quite a while depending on how much you use it. It has a trigger you pull with your finger to make it spray. Sincerely, John
----- Original Message ----- From: jessica brown <justforlistmessages531@xxxxxxxxxTo: John Patrick Houck <victimsofchange@xxxxxxxxxxx>,bn list
<braillenote@xxxxxxxxxxxxx
Date sent: Fri, 15 Nov 2013 11:52:42 -0800 Subject: re: [BNU] Re: braille displays was: Some great news
How long does one can last? Is it a onetime use thing? I mean, once you start spraying air, is there a way to stop it or does it just stop when the air is gone?
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