Thank you for waiting. These bugs are called box elder bugs. They are mainly pests when they get inside houses. they do not bite, carry disease, or cause significant damage to plants. I've had a huge population of them at my house for several years.
If the bugs are an outdoor problem, I encourage you to do nothing about the bugs. There is no insecticide you can safely spray around turtles. They are very sensitive to chemicals. If you can spray shrubs and trees without getting it in the turtles' area, you can use a horticultural oil, which will kill those bugs it coats. Horticultural oils are available in garden centers.
If both the bugs and the turtles are in your house, repeated vacuuming of the bugs is the best way to get rid of them. Be sure to seal and discard the vacuum bag, or they will crawl back out. You can also place diatomaceous earth in cracks and crevices where you find the bugs, and around the outside perimeter of your house to keep more from coming in. The diatomaceous earth kills bugs when they ingest it, but isn't harmful to other animals. Here is an online source:http://www.dirtworks.net/Diatomaceous-Earth.html
If you have more questions, just let me know by clicking on REPLY. I hope you'll either be able to tolerate the bugs or eliminate them in a way that won't harm your turtles.
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