Just spray it and get high floatability like the Shimazaki Dry Shake!
The main difference is the application process of the spray. You do not need to treat your fly with a liquid float ant like Gink or Aquel before applying the Shimazaki Dry Shake Spray like you did with the shake. Just point it at the fly and give it a quick shot on the top and bottom and watch the magic happen. It actually comes out as a liquid and then right before your eyes turns white like the powder. The most impressive thing is that the powder stays on the fly longer, giving you more cast/fish per treatment.
Will fit into any standard dry shake float ant holder!!