@Corona We’ve had a MicroStation Graf EasyOne installed last year, see link. Our clay geology and small garden size did not permit the installation of a classic, traditional fosse
Absolutely no complaints. One single regard is all that is visible, plus an attractive nou that is being planted up to receive the treated water. Minimal disturbance to garden/lawn when installing it, now completely grassed over. Seems effective and efficient…we have taken on an annual maintenance contract with manufacturers agents…so far so good re MicroStation.