How can I avoid static build-up when using duster?

The duster vapors themselves do not produce much of a triboelectric charge. There isn’t a non-contaminating additive that can be added because it would just stay at the bottom of the can (the vapors are at the top, which are released when you open the valve).

The liquid propellant can produce a charge, and the plastic actuator can become charged as well. There are a few solutions to consider:

1. Anti-Static Freeze Spray can be used upside-down as a duster. The vapor itself won’t be any different, but if the can is mistakenly turned, the liquid is much less likely to be charged.
   
2. Ultrajet All-Way is an invertible can, so it is designed to avoid spraying liquid regardless of how the can is turned.
   
3. Ultrajet Duster System includes a chrome trigger sprayer that screws on to a replaceable can. That trigger is conductive, so it can be grounded either with contact with your hand (assuming you are grounded) or with some kind of clip and strap run to a ground point.