Normally, it is not necessary to pump the septic tank before shock treatment. However, if the level in your septic tank is dropping very slowly, you may want to pump it dry to give your leaching field a break before shock treatment. Please discuss this with your consultant so that he/she can advise you on the best way to proceed.

You don’t have to wait for your septic tank to be emptied before starting the maintenance. If your tank is due to be emptied in a few weeks, you can wait if you want. Otherwise, start the treatment as soon as you receive the products.