Which of the following methods is effective in controlling rodent populations?

The most effective methods for controlling rodent populations involve both proactive measures and baiting strategies. Setting up bait stations plays a crucial role in directly reducing rodent numbers by providing a controlled way to administer poison or traps to eliminate them. These bait stations are designed to attract rodents while keeping non-target animals and humans safe.

Keeping outdoor garbage sealed is equally important in preventing rodent infestations. Rodents are opportunistic feeders, and accessible food sources will attract them to residential and commercial spaces. By ensuring that garbage is properly sealed, the potential food sources for rodents are diminished, thereby reducing their presence in the area.

Together, these two strategies—using bait stations to eliminate existing rodents and keeping garbage sealed to prevent new ones—form a comprehensive approach to effective rodent control. This combination addresses both immediate removal and long-term prevention, making it the best choice among the options provided.