In Kirra wrote:
Do you think grasshoppers might also decide that it is too spicy? I
had a number of them last year who not only liked to munch the leave
to get them to look like lace and eat the blooms but who also decided
that eating through the canes was quite scrumptious. I had to cut back
three big basils/laterals on my climbing peace because of those
critters eating 3/4 of the way through canes.

Sure, give it a go. Lime sulphur is persistent enough to last a couple
of rainstorms, as is Mancozeb.

Since you're here in Oz you might also look at 'Garden Doctor' by
Chemspray. It is an old-fashioned powder spray mix containing sulphur
based fungicides and malathion insecticide. Spicy AND lethal!