Which method is NOT effective in reducing rodent populations?

Increasing food availability is not effective in reducing rodent populations because it actually works counter to the goal of control. Rodents, such as mice and rats, are opportunistic feeders and will thrive in environments where food is plentiful. When food resources are abundant, rodent populations can grow rapidly, as they have a reliable source of sustenance to support their reproduction and survival.

In contrast, methods like trapping and baiting, regular sanitation practices, and sealing entry points are all proactive strategies aimed at limiting food sources and access to shelter, thereby helping to decrease rodent populations. By removing available food, maintaining cleanliness to avoid attracting rodents, and blocking entry points into buildings, these methods effectively contribute to rodent population control.