I've struggled for years to grow organic squash. The squash bugs have always won the battle. However, this year is different. This is what I've learned over the past years.
Plant certified organic seeds in the best, most fertile soil you have. Good soil produces stronger plants that have the strength to fight off hundreds of bugs. Don't plant more seed than you can visibly check every other day. Right now I have 8 plants. Each morning or late evening check your plants for large brown bugs or tiny grey bugs which are new hatchlings. I move the leaves around & as I move the leaves the large bugs will move under the stems. I get great joy in grabbing those critters & smashing between my fingers. I spray my plants with OMRI approved fish emulsion containing sea weed once every week or so. Thus making your plants stronger. Once a week I spray the plants around the base of the plant first with OMRI approved spray. The bugs will run to the top of the plant and I eargerly smash them. Than I dust diatatamus earth on the ground & plant. You can also check for clusters of brown eggs on leaves. I pick up a little soil and rub on them so they don't hatch. Be sure to plant about a dozen new seeds every 3 weeks in case you lose the battle of the squash bugs. Be sure & water once every third day. Happy squash bug hunting!! Libby