Making a homemade bug spray is an effective ... Neem oil is effective against aphids, caterpillars, and beetles. Spray the solution on plants in the early morning or evening.

Studies suggest citronella helps repel mosquitoes, as well as fleas, aphids ... Shake gently to mix. Spray to apply. You can also create a homemade bug spray to use around your house or yard.

Here, pest control experts and plant pros share their favorite recipes to make DIY aphid sprays, and explain how these green ...