Timber treatments generally consist of chemicals that need to be handled safely and appropriately. Important measures to take when using treated timber, especially hazard classes H3 and above, are:
- reduce contact by wearing gloves, goggles and a dust mask
- don't burn off-cuts or cook with them
- dispose of waste in an approved landfill
- wash your hands before using the toilet, smoking or eating
- wash work clothes separately
- ventilate work spaces as much as you can
- working with solvent-damp timber is not advised, solvent-damp timber should be allowed to properly dry off before use.
Note: Boron has been used commercially as a timber preservative in New Zealand since the 1950s, with no known health issues for timber users or building inhabitants.