If you have a large garden or a smallholding then an outside toilet will eliminate muddy footprints in the house. It will keep working all year too as waterless toilets cannot freeze in winter. Perhaps you have a remote building like a beach hut or woodland cabin that needs sanitation.
Some examples of NatSol toilets on private sites:-
Scottish bothy installs NatSol Compact toilet
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Site: Nether Glenny Bothy
Location: Port of Monleith, Stirling
Building/Toilet Type: Compact
Description: This bothy which is let out to visitors has a NatSol Compact toilet installed at the rear.
Installed date: September 2018
Link: Nether Glenny Bothy
Shepherd's hut garden toilet
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Site: Private garden, Andover
Location: Andover, Hants, UK
Building/Toilet Type: Client building with NatSol Compact toilet
Description: A very tasty shepherd's hut built by the owner. It contains a NatSol Compact toilet, a urinal and basin.
Installed date: May 2018
Director's garden toilet
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Site: Private garden of NatSol founder director, Nick Grant.
Location: Orcop, Herefordshire
Toilet Type: Compact
Description: The NatSol Compact toilet was developed for fairly low use sites such as private gardens. This one is installed in a prototype NatSol hut designed for production and ease of dispatch as a flat pack building.
Installed date: April 2018
Garden Compact toilet
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Site: Private garden.
Location: Newbridge on Wye
Toilet Type: Compact
Description: The NatSol Compact toilet was developed for fairly low use sites such as private gardens. This one is installed in a building bought from Preserved Timber Products, Builth Wells and erected by the owner. It adjoins a pre-existing summerhouse.
Installed date: Autumn 2022
Beach hut Compact toilet
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Site: Coastal
Location: Cliff
Building/Toilet Type: Compact
Description: A private beach hut. The cubicle doubles as a shower cubicle.
Installed date: June 2014
Garden composting toilet for a smallholding in Wales

Site: Brook House
Location: Llandinam
Building/Toilet Type: Standard Timber/Full Access
Description: Sneaked into a hedge line between trees it looks just like a garden shed and will, no doubt, be used as one from time to time.
Installed date: November 2011
"Our composting toilet is absolutely fantastic and now doubles up as my garden shed! The installation was well co-ordinated and professional and the toilet was ready to use immediately. Thanks for making our dreams a reality." SR