Matt writes
The gallon jug is pictured with a mystery bag of something. But the label PDF on this page only addresses the spray bottle product, which has no mystery sack.
The bag shown attached to the Hi-Yield Killzall Quick RTU gallon size is the hose and trigger for applying the product. You would remove the cap and place the hose inside and tighten onto the bottle.
Answer last updated on: 07/01/2020