Which formulation typically leaves visible deposits after drying?

Wettable powders are formulated to be dispersed in water before application, and they contain solid particles that do not dissolve completely. When these powders dry after application, they often leave behind a visible residue or deposit on the treated surfaces. This is due to their particulate nature; as the water evaporates, the solid particles remain behind, which can sometimes be noticeable.

In contrast, flowable liquids and soluble powders dissolve in water, leading to no residue once they dry. Flowable liquids form a homogeneous solution, while soluble powders create a clear solution that does not leave any solid deposits after evaporation. Dust formulations are also designed to be applied in a dry state and typically do not leave a noticeable residue after application, as they can disperse evenly and settle without creating visible deposits.

Thus, wettable powders are clearly identified for their characteristic of leaving visible deposits once the water content evaporates, differentiating them from the other formulations listed.