Human: How to clean the septic tank? Assistant: 
First, you need to make sure that your septic tank is not blocked. If it is, then you should contact a professional to unblock it. 2 Next, you will want to empty the septic tank and remove any solid waste or debris that has built up in it. 3 After emptying the tank, you can use a cleaning product specifically designed for septic tanks to scrub away any remaining solids. 4 Finally, you will need to inspect the tank regularly to ensure that there are no blockages or other issues.