But even she draws the line at putting it back directly into the food chain.
''Faecal aversion'' and the ''yuk factor'' are recognised hurdles that face local authorities wanting to dispose of sewage sludge by using it as farm fertiliser.
Dr Hollebon has no aversion to using the output of her composting toilet around ornamental trees on her farm but the advice that came with her appliance was to not use its contents on her vegetable patch.
''You are not supposed to but I think that's more to do with what goes into it. So, if you use eco-chemicals and cleaning fluids and you eat organic food, which is what we try to do here ... then that's probably OK.
''But we don't do it.''
Dr Hollebon's composting toilet has a flush cistern like regular toilets. The difference is down below where a device separates liquid from solid.
The liquid goes into a disposal field, in a similar way to a septic tank system and the solid effluent goes into containers to be digested by tiger worms.
And every couple of months, depending on how many people use the system, Dr Hollebon takes a wheelbarrow-load of composted material to her trees.
She does not find it an onerous chore and the most unusual thing she has experienced has been the large number of tomato seedlings that spring up where the compost is dumped.
The composting part of the toilet system has its own room in the house which must be kept above 0degC.
Dr Hollebon says her family has never suffered any health issue that could be traced back to its composting toilet.
