Which of the following is NOT a single feed anticoagulant?

Diphacinone is identified as a multiple feed anticoagulant rather than a single feed anticoagulant. The distinction between single feed and multiple feed anticoagulants lies in how rodents react to the bait. Single feed anticoagulants are designed to be lethal after the rodent consumes a single feeding, leading to a lethal dose in a shorter time frame. On the other hand, multiple feed anticoagulants require the target rodent to consume several feedings over time to accumulate enough of the substance in their system for it to be fatal.

Brodifacoum, bromadiolone, and difethialone, in contrast, are classified as single feed anticoagulants, meaning that a rodent can ingest a lethal dose from one feeding. Understanding this classification is crucial for pest control strategies, as it allows professionals to select the appropriate rodenticide based on the specific circumstances and rodent behavior involved.