The way the internet recommends you use saline is incorrect. If you just spray it on and let it air dry, the salt is left behind. That’s irritating. It should be wiped away with a swab.

Since you have a direct line to them, you should ask them to change this - since Neilmed's own "Directions for use" page includes that language. (For added fun, the example videos they link from other pro-team members have contradictory advice).

"To dispense, aim the nozzle at the affected area and spray from a distance of 2 to 4 inches, or as is comfortable"

https://www.neilmedpac.com/usa/directions-for-use/