Thank you! Does it have to be imitation, or will the real thing work too? I'll try citronella first, anyway - I don't like vanilla.
I think it's only the fake kind, but I'm not sure (my evidence is "my best friend told me so and then I put fake vanilla on myself before a Fourth of July party and didn't get any bites when usually I get lots").
If it's worth saying, but not worth its own post, even in Discussion, it goes here.