This year my seed started squash plants were put out into the yard in different places. I carefully watched for squash bugs and when I saw the first one, I covered each individual plant with Remy cloth. That got to be tiresome in keeping them sealed and with watering, so after about a week I removed the cloth and awaited my annual gross invasion of squash bugs. Surprise! My plants are growing beautifully and I haven't found a bug yet!!!
I found the idea of covering the plants with cloth until blossom time from the 'The New Seed-Starters Handbook' by Nancy Bubel. I didn't wait until blossom time and it still seemed to work!