As with many household items, natural bug spray can be made inexpensively and naturally at home. Why would you want to make your own bug spray? One key reason: Your own product won’t contain the chemical DEET, which — although approved by the EPA — is known to cause a host of problems, from allergic rashes to neurological damage. This recipe for bug spray can be put together quickly. Best of all, it can be varied based on what you have in your pantry.