What is the most effective rodenticide formulation for burrow baiting?

The most effective rodenticide formulation for burrow baiting is blocks. This is primarily due to their durability and ability to withstand environmental factors that could compromise other formulations. Blocks are often designed to be dense and resilient, preventing them from breaking down quickly when placed in burrows, which are naturally moist and can have loose soil.

Additionally, blocks are generally shaped in a way that makes them easy for rodents to access while still being difficult for non-target species to consume. Their formulation can also make them more appealing to rodents, ensuring that they are consumed more readily than other forms such as granules or liquids.

Other formulations, while they have their own applications, may not be as effective specifically for burrow baiting. For example, granules might not remain in place as effectively or could be washed away by rain. Pastes may require specialized application techniques and may not be as readily accepted by rodents when placed in a burrow environment. Liquids can also be prone to spillage and evaporative losses, which diminishes their effectiveness in the burrowing context. Thus, blocks stand out as the preferred option for this particular baiting strategy.