Which formulation is most suitable for creating a solid block for placement in bait stations?

• A. Baits
• B. Flowable
• C. Extruded Block
• D. Dust

Answer: (C)

The key idea is that bait stations need a form that stays solid, fits the station, and releases the active ingredient in a controlled way. An extruded block is made by pushing a formulated bait mass through a die to create a uniform, dense solid shape. This solid block can be cut or molded to exactly fit the station’s cavity, stays put without leaking, and resists moisture and handling wear. Because it remains a solid mass, pests can feed on it over time, providing a steady release of the attractant or poison.

Other formulations don’t match this purpose as well. A general term like baits could describe many forms, but it isn’t specifically a solid block designed for stations. A flowable or a dust formulation is liquid or powdery and tends to spill, blow away, or become messy in a station, making them less suitable for secure placement.