It's generally recommended that you replace your garbage disposal every 10 years. After 10 years of use, the disposal will have seen a lot of wear and tear and may not work as efficiently as it did when it was new. Plus, older garbage disposals can be more susceptible to leaks, which can create a mess and damage your plumbing.

It's generally recommended that you have a garbage disposal replaced every 8 to 10 years. However, this may vary depending on the make and model of your disposal, as well as how often you use it. If your garbage disposal is showing signs of wear and tear, or if it's not working as efficiently as it used to, it might be time for a replacement.