When environmental activists claim air pollutants kill thousands of Americans each year and sicken still thousands more, their claims ring hollow when they oppose a cost-effective, environmentally friendly solution.
Compressed air blows away any factory gnorts, the body is inspected for tiny defects and degreased using an environmentally safe water-based solution and surfaces are wiped with tack cloth in between each process to remove dust.
Importing fossil fuel is one solution, but the environmentally minded Swedes are unhappy about the greenhouse-gas implications of burning more coal, oil and natural gas.
Mr Wrench believes that his environmentally-friendly way of living could be a solution for many young people in Pembrokeshire priced out of the housing market.