Good to question it. One substance at least that has the name or nickname "lemon" connected with it is Not good. Isn't citronella an insect repellant? Cheapest does not seem the best recommendation.
Wow, I am going blind! I looked for it but completely missed it in Glenn's post. Leaving traps out all year does have some interesting results.Sorry I didn’t include the quote referencing these items. It is in GWW’s comment immediately before mine above.