Andy Dingley wrote:
On 10 July, 14:52, "TheScullster" wrote:

I've also heard that the ant powder works well on wasps nests!

Not AFAIK at this time of year. Later on it will.

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.

Wasps change their diet by season and they're more "ant like" (ie
susceptible to sweet lures) in the late Summer.

Yeah, but by then ye'll have to kill each one by hoping they all crawl
through the powder left out. Larger task with more wasps. By then, ye
may have to use the foam and the deadlier alternatives aimed
specifically at nests.

--
Adrian C