The spray pictured above is one of my last resort tools. It is a certified organic spray made from canola oil and pyrethrins, thus the name Pyola. You mix it with water and spray on your plants. It is very effective against a variety of caterpillars, hornworms, Japanese beetles etc. I apply it late in the day after most of the pollinators have gone to sleep and even many of the plants blossoms have closed, so the bees won't be rubbing against the spray the next day. It does not affect bees and such in the same way as soft bodied insects but you don't want to spray it right on them. I order the stuff from Garden's Alive, an organic gardening company that sells a variety of products that I think are very effective. I buy very little stuff like this but when I do need it I usually go to them. They offer some great discounts on their products for first time buyers too. I also buy their Kelp meal for the garden. Now, like I said, I only use this if I seem to be having an unusual problem with insects, like squash bugs. My chickens won't eat the bugs; I think they must taste really bad because Little Bea grabbed one up one day and immediately spit it out and started wiping her beak on the ground!
The label says it is not effective against fire ants but I beg to differ. You just have to apply it differently. Now, for those of you that don't have fire ants, count your many blessings. They are a hideous curse here and will wreck a garden if left to it. They are one of the most destructive things I have ever seen and incredibly vicious. Alabama has had a significant drop in our quail population over the past couple of decades, due in part, to attacks from fire ants. Quail nest on the ground and fire ants will attack and eat the quail babies. There has also been documented incidences of fire ants attacking and destroying wild honey bee hives. They are not native to this area, or even the US if I remember correctly, so I don't want to hear any shit about my inclination to destroy a fire ant mound. I don't go around looking for them but I will not allow them to reside in my yard or around my animals. It is very difficult to find a natural product that will kill or at least repel fire ants and let me tell you, I have tried most everything; borax, cornmeal, salt, diamatious earth, you name it. This spring they got in my coldframe and were destroying the contents so, on a whim, I put a few drops of Pyola, undiluted, right on top of their mound. By the next day they had moved out. I was elated. I don't think it killed them but if it just repelled them that was enough. I finally found something I could use against them around my food crops!
I am also trying an organic copper spray, like Ron mentioned, on my wilty tomato plants. I gave them some Epsom Salts water, which seemed to help a little but didn't quite do it. Like Ron said, it's very hard to sit and watch your crops, that we depend on so much, die or get eaten right in front of you, without trying something. If people are going to criticize me for trying to salvage my labor and food, well, they can buy my groceries for the next year too.
So, the natural methods take time to work but this year I have seen a marked improvement in beneficial insect/ critter population and health of my garden. I also keep several bird bathes and feeders out. I have noticed that the honey bees enjoy the bird bathes as much or more than the birds. I often see half a dozen or more of them stopping for a cool drink during any part of the day.