What is the correct way to use the Zerostat?

Also,
Hold the Zerostat within 12" (30.5 cm) of the surface or object to be treated. Squeeze the trigger slowly for about two seconds, to emit a stream of positive ionized air over the surface of the object. As the trigger is slowly released, a negative show of air ions is produced resulting in static neutralization. Repeat this procedure at several points across the surface of the object.

The Zerostat needs no batteries or electrical supply and unlike other antistatic products, the Zerostat contains no radioactive components whatsoever.

Important notice! Remove the ion indicator from the barrel before using the Zerostat Antistatic Gun to neutralize static charge. Ion indicator is for testing use only.

Caution! Do not use in an explosive or combustible environment.

An old trick is to point the Zerostat away while pulling the lever, then towards the brush when releasing. This gives the record brush a neg. charge and is quite effective for collecting debris. Best results occur by treating the lp while off the platter. Audphile's suggestion for grounding is good, try touching the TT's spindle with one finger and a grounded unit (amp's faceplate?) with another finger to neutralize system static.

...and don't do something foolish like press your finger on the tip of the gun to test if it's working, it hurts like hell.

Release the trigger slowly. Don't just let go. I take up to 5 to 8 seconds to completely released the trigger. You can hear it.

Can it damage cartridges?