A rubber threshold strip is a flexible barrier that is installed at the base of the garage door. Its primary function is to seal the gap between the garage floor and the bottom of the door. This gap, if left unsealed, can become a doorway for unwanted elements. For example, rainwater can leak in during storms, causing flooding or water damage. Similarly, dirt, debris, pests, and even rodents can easily find their way into the garage, creating an unhygienic environment and leading to potential pest infestations. By effectively sealing this gap, a rubber threshold strip provides an essential line of defense against these intrusions.