On 10 July, 16:27, Adrian C wrote:

Nope, early with the ant powder is much better. The wasps are focused on
gathering food for the nest, and a nice dose of Permethrin is what's in
Nippon ant powder (and probably the others). It will kill the nest
occupants when they bring it home and feed the others.

What's in Nippon powder? Is it plain permethrin or (like the liquid)
mixed with something sweet to entice the ants into taking it indoors?