Ose v napušču pri strehi - kako se jih znebiti?

Po "terapiji" s Forth sprejem so takoj pocrkale, jih ni bilo več. Čez par dni so potem začele od tam po tleh padati še majhne crknjene ose, sklepam da tiste ki so se šele potem izlegle in jih je vseeno pokončalo.

Ti dve sestavini tetramethrin in prallethrin bosta dali željen efekt.
Tako pravjo na univerzi v minesoti https://extension.umn.edu/yard-and-gard...

yellowjacket or paper wasp

you can treat it using an aerosol spray labeled for wasps and hornets or something similar

These contain active ingredients such as tetramethrin or prallethrin.
For yellowjackets, spray it directly into the opening of the nest where they fly back and forth.
For paper wasps, spray them so all of the combs receive some pesticide.
It is also possible to kill paper wasps with a soap and water mixture.

Yellowjacket ground nests
Permethrin is the active ingredient in insecticide dust. The dust particles will stick to the insects as they leave and re-enter the nest and they should be controlled within a few days.
Pouring a liquid pesticide into the nest entrance is not as effective as the above methods. Liquid might not reach the nest depending on where it is located within the burrow.