Use of Power tools – Occasionally the use of petrol chainsaws is a necessity. Where it is possible and seen fit, we will use hand saws and tools to reduce the levels of harmful emissions The type of petrol we use is bio-chain oil which is fully biodegradable and isn’t a pollutant, which allows it to be used near water reserves, lakes, ponds and other ecologically sensitive areas. Lithium-ion powered chainsaws and other equipment are used when possible; they are both zero emissions and also quieter.