What is a key difference required in a system used for spraying polymers compared to a regular system?

The use of extra-large suction lines in a system designed for spraying polymers is crucial due to the physical properties of the polymers themselves. Polymers, when mixed with water or other solvents, can have a higher viscosity compared to typical pesticide formulations. This increased viscosity can make it more challenging for the liquid to flow through standard-sized suction lines.

Larger suction lines help mitigate the risk of clogs and ensure a smoother flow of the polymer solution, especially under pressure. By accommodating the thicker consistency often associated with polymers, the spraying system can operate effectively without interruptions, allowing for a consistent and even application. This consideration is critical for achieving the desired coverage and effectiveness of the applied polymer products in pest control scenarios.

The other options would not address the specific requirements for managing the unique properties of polymers in a spraying system, making them less relevant for this particular situation.