On Sun, 17 Oct 2004 17:47:37 +0800, Paul Homes
wrote:

Can anybody tell me the name of the pink/red additive councils use in
their herbicides to let the operator know a piece of land has been
sprayed, please?

IIRC correctly, it's called "Waxolene", and a little bit goes a long
way. It's the same thing used in ANFO to identify the explosive from
normal fertiliser.

Waxolene is typically used at the rate of 1 tsp per litre.

Geodyne