This year I got neem oil so I could plant squash. This is my last-ditch organic effort before I throw up my hands and invite Monsanto (Satan of the agriculture industry) to build a chemical plant and/or genetic modification lab on my property.
Baby grasshoppers became apparent last week, which disappointed me greatly, as last year I used Nolo Bait to deal with a terrible infestation. It is supposed to have some residual effect but by the time I'd gotten mine from the lady who finally ordered it, it was a bit late in the year. I used neem oil on the ones in my garden area last week, and I believe it had an effect! There are still baby grasshoppers, but fewer.
But my bean sprouts kept getting eaten. My mad scientist friend advised it could be nocturnal bugs, like earwigs (and also told me how to use magnets to grow super-plants, and how to precipitate some toxic acid from crocus bulbs to [naturally] genetically-modify (?) things into super-duper-plants o.O ). I haven't had time to find a compass to determine + and - on my kitchen magnets, but I did don Hubby's LED headlamp and head out into the garden after dark the other night.
Earwigs. Perched on (what is left of) my squash seedlings, hanging around the beans. Also roly-polies (sow bugs). The info I looked up on Neem oil didn't say anything about earwigs, but many sites recommended using soapy water on them. The Neem oil says NOT to add soap or other surfactants, but my sprayer was already half full of neem, which I wasn't going to waste, so I DID add some dawn dishsoap to the mix. I hunted through the garden, hunched over (I think the battery is getting low), hosing down the thieving earwig vandals. I am happy to say it worked! The sow bugs don't seem as affected (darn it), and I don't aim for spiders, but they do run away from it.
Oh, and I have a friend that's fairly new to the area, and she had never seen an earwig. They are pretty hideous, if you're not used to them, and in case you don't know what I'm talking about, here you go:
So, in any case, neem oil works on earwigs. Or maybe Dawn dishsoap does. :)
*I've also set 'traps' of crumpled or rolled newspaper. They like to crawl into it. Some recommend dampening the paper, but in the morning you can gather up the papers in a bucket and set them afire, or dump them in the middle of some hot asphalt, and be done with them.