Elegant bug-juice bottle

On Core77, Hipstomp gives us a structural package designer's perspective on the elegant and lethal Talstar Professional Insecticide bottle.

The bottle contains a potent concentrate of bug-killing juice. The user is meant to squeeze the base of the bottle, causing a measured amount of product to be drawn up into the heart-shaped chamber, which is graduated. In order for the drawing action to work, air needs to come in from somewhere, and the other cap on the tower-like portion of the bottle serves as a valve. That side of the bottle is shaped like a handle while the other side curves like a spout, hopefully making it obvious that you're meant to pour one way but not the other.

Talstar's Bugged-Out Bottle Design – Core77