In rodent control, the primary method for achieving permanent results is:

The most effective method for achieving permanent results in rodent control is proofing. This approach focuses on making buildings and structures less accessible to rodents by sealing potential entry points, such as gaps, cracks, and holes in walls, floors, and foundations. This proactive strategy significantly reduces the likelihood of rodents entering an area by eliminating their pathways, thus addressing the problem at its source.

Proofing is vital because it not only helps to prevent infestations but also complements other control methods, such as trapping and baiting. While trapping can remove individual rodents and poison baiting can kill those that consume it, these methods do not inherently prevent new rodents from entering the space. Therefore, without effective proofing in place, any temporary control measures might ultimately prove insufficient, resulting in recurring infestations.

In contrast, trapping, while effective for immediate removal, relies on the presence of rodents and does not stop more from entering. Poison baiting can be hazardous to other wildlife and pets and also does not prevent future infestations. Repellent application may deter some rodents temporarily, but it is often less reliable than physical barriers created through proofing. Thus, proofing stands out as the most sustainable and effective method for long-term rodent control.