8 oz non-toxic  

Bee Quick is used to move the bees out of your honey super when harvesting. It is used with a fume board. 
When exposed to air, the non-toxic liquid turns to a non-toxic vapor that smells good to you, but irritates bees. 
Bees move away from the fumes, and out of the topmost super directly under the fume board.

The warmer the temperature the more fumes. 

Don't use too much!  Spray Bee-Quick in a zig-zag pattern, across the full width of the fume pad, including the spaces between the outer frames and the hive body, but don't overdo it.  If you use too much, bees will start coming out of the hive entrance.  The exact amount required will vary with temperature, the amount of sunshine on the fume board. In general, use less on hotter and/or sunnier days