Wondercide All-Purpose Organic Home & Garden Insect Control 32 oz Spray Made in the USA with non-toxic, food grade ingredients so it's safe to use around food. Repels Roaches, Ants, Flies, Gnats, Dust Mites, Moths, Aphids Scale, Garden Insects, & much more! How Long Does it Last? This insect control spray can be used as often as everyday to freshen air, pet bedding, or to accomplish indoor and outdoor objectives. It's chemical-free and non-toxic, so you can't use too much. It's best to perform routine pest control once every six weeks or more frequently as required to establish control over the environment in certain climates or seasonal times of the year. How Does it Work? The aroma of cedar creates a barrier of re-entry, making the treated area off limits to any flying insects or crawling pest.