Remember the system works on natural bacteria produced by flushing natural products. You can kill the natural bacteria with some of the products you use or introduce products (wipes, sanitary napkins…) that the system cannot break down. The result could be a failure of the septic system and a backing up of sewage into your home.
Some helpful pdf's
A few tips to help keep your septic system working properly and protecting your family with environmentally sound waste management practices: