Pump sprayer

From BonsaiWIKI

A pump sprayer is a bonsai tool used to produce mist. It works by forcing air through a small orifice, producing a fog of moisture-laden air.

Pump sprayers are useful in increasing humidity, keeping roots moist during repotting, and dispensing water soluble fertilizers, insecticides or other chemicals.

Pump sprayers may operate with a squeeze trigger or a plunger. The larger volume and convenience of the plunger type sprayers makes them a popular choice.