Human: What's the most important thing to know about a septic tank? Assistant: 
The most important thing to know about a septic tank is that it needs to be emptied and inspected regularly by a licensed professional. This should include checking for signs of damage, such as cracks or leaks, and ensuring that all necessary components are in working order. Additionally, if you're planning on selling your home, you'll need to make sure that the tank is properly removed from the property before the sale can proceed.