Contaminants.

[Stringfellow]

I located some on ebay that are new and therefore ‘clean’ for around the £60 mark. I’d feel uncertain about using anything that might contaminate the soil, and therefore crops/ food. There are also water barrels available for @ £10 – £15 and could be used as ‘dip tanks’ – this may speed up watering as you can refill your cans swiftly.