What factors contribute to the frequency of rodent infestations?

The frequency of rodent infestations is significantly influenced by the availability of food, shelter, and nesting sites. Rodents, such as mice and rats, thrive in environments where these essential resources are plentiful. Food sources can include waste from human activities, pet food left outdoors, and naturally occurring food like fruit and seeds. Shelter can be found in spaces such as garages, basements, attics, and vegetation overgrowth, providing safety from predators and harsh weather. Nesting sites are vital for their reproductive success; hence, if these conditions are optimal, the chances of a rodent infestation increase markedly.

While changes in weather patterns can impact rodent behavior and habitat, they are not the sole factors driving infestations. High predator populations may contribute to controlling rodent numbers but do not directly create conditions leading to increased rodent presence. Similarly, increased human development can influence rodent habitats, but without the primary elements of food, shelter, and nesting opportunities, infestations may not occur as frequently. Therefore, the correct choice encompasses the fundamental needs of rodents that directly lead to their population increases and infestation potential.