Modern water saving flush toilets. They just don’t deliver enough water with sufficient force to complete the required task and therefore require manual intervention if I’m going to leave the facility in a sufficiently hygienic state that meets Dr Beardy’s (Mrs) exacting standards. 🤬
Flush early and flush often. That’s my motto.
Persistence and bleach is my motto.
Rubber gloves and a strong stomach.
Well that's the more blunt way of putting it but as usual he's dead right.
I have long been an advocate of old fashioned cisterns, with the efficiency only a large measure of kinetic energy can deliver. But they do use a lot of water. And can't really be used with pans designed for lower drops. It's surely not beyond the wit of man to design a highly efficient lavatory - both in terms of flush effectiveness and low water usage - utilising the benefits of cistern height and design of pan.I thoroughly failed the Fluid Mechanics part of my 1st yr BEng course, fwiw
There was a programme on the TV a number of years ago where a design team went to various industry sectors and did design consultancy with the management of various companies. The one that sticks in my mind is when a leading design duo went to Armitage Shank, of the bog manufacturing persuasion.