Pump your septic tank every five years to keep it in proper working well. Although it could cost a good deal of money to pump out your septic tank, it is nothing compared to what you will have to spend on cleaning up a backup of sewage or repairing or replacing your septic system.
Do not pay anything until they finish the job. You may need to make a small down payment before the job has begun, but do not give them the entire sum of money until you are sure they have done a good job. You want to make sure that the plumber did what he promised before he is reimbursed for the entire amo