I've just moved into a property that has a septic tank. Should I be using specialised cleaning products in the toilet/sink/dishwasher, etc. or can I continue to use bleach, Harpic, etc?
We have a septic tank. I use all the usual products. No problem. Just carry on as usual - but don't forget to get it emptied once a year.... or more often if you are a big household.
I have used bleach in our loo for 40years. OH has given up telling me off. It still works well and gets emptied rarely. It's s very old brick built one (not legal now) but the chap who empties it says it works better than the newer ones. My neighbour had a new one installed and it needs emptying regularly.
We have an old brick one too which we have emptied annually. I dont use bleach myself, but in moderate amounts it wouldnt have an adverse affect if you did. Just avoid the very harsh drain cleaners and the like.