Once you get around 10 centimetres below the ground, the temperatures are not adequate to melt poly in the ground except in the event that you put a significant fuel load on the ground itself. Watch out for old dead tree roots, timber posts and garden ending which can burn down into the ground adjacent to poly pipe well below 10 centimetres.

Anything – pipes or sprays above ground, I would say metal is the way to go.

The old knapsack and mops are an extremely effective way to put out a lot of ignitions with very little water.

Plastic hoses invariably are burnt out and useless if they were out during the fire event itself.