On Feb 18, 8:29*am, leedsbob wrote:
we are shortly moving to a rural property with no mains drainage,we
have been told we need to be carefull about using products which
damage the bacteria which form part of the process,can anyone with
experience of septic tanks adise us the products to use,ie,toilet
cleaner washing machine detergent and dishwasher tablets,many thanks

Two bits of guidance:

Avoid disposing of chemicals into the tank - paints, solvents, drain-
unblockers etc, and take it easy with bleach, a little is ok.

Get the tank pumped out and checked out soon after you move in (even
if the current owners claim it has been done recently) - if the system
backs-up it is very unpleasant. Major work on a tank or the drainage
field is *very expensive* (think thousands) - but a properly look-
after system (yearly pump out, and nothing through it that will choke
the drainage field) will last many, many years.