I designed and built a toilet shed down the garden and installed a Separett Villa 9000.  It’s mainly used by the grandchildren and ourselves but is very handy if we have visitors and are having a BBQ down the garden – no having to dash up to the house.  I also installed a dry urinal, from another supplier, as many guys don’t want to sit down. There is no smell at all and the toilet fan also keeps the whole building dry. Urine is discharged to limestone chipping soakaways behind the shed. There are no windows and lighting is by an LED light with microwave motion detection. I designed my own ‘Please sit down’ sign, as I couldn’t find one I liked, and had it made SignOmatic