i agree lovemoths.. there is no need to spray them.. i get them ever year as i love verbascums also.. so i just collect them all up and move them to three plants i planted in garden just for them, in with the veg bed.. so they cant harm the others in my front flower beds.
i grow plants and flowers that encourage bees and butteflies and all manner of british wildlife into my garden.. as monty says there is always a way for both of us to be in our gardens together where we both benefit.. to see the spray that are killing our bees now being banned, to protect them, and then read this, its terrible.
all wildlife should be supported in a way that helps both them and the gardener, the suggestion of total obliviation breaks my heart.