Posted: Mon Oct 31, 2022 5:16pm
Easy peasy, had them in the UK and Spain. They work by enzymes that break down waste. There should be no smell. Things that might cause a problem are too much, detergent, too much use of bleach and the wrong sort of loo paper. Mercadona sells loo paper that breaks down easily/quickly. It also toilet 'teabags' called fossa septica that come in a oblong green and white cardboard box to use regularly, they will keep it ticking over.
As far as emptying that depends on the size of the family in the house. There's a few companies that do it. Desatasco Cecilia being one. I have a photo of the others from the focus magazine but have struggled to upload so if you want pm me and I will work out a way to send it. Hope this helps regards Karen