How to replace a weatherseal on the bottom of automatic garage door?

Syl
by Syl

My garage door is in excellent shape but the weatherseal on the bottom of the door is nearly 15 inches short, allowing frogs, snakes, and mice to gain access to the inside of my garage and home. I need to replace the entire strip(wetherseal), or, find an alternate way to close the 15 inch gap on the left bottom of my garage door. Help!!

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