Here is a Neem oil mixture recipe to use as a food safe insecticide

About Neem Oil
Neem oil, extracted from the seeds of the neem tree, is a versatile and natural pesticide widely used in gardening and agriculture. Renowned for its broad-spectrum efficacy, Neem oil combats various pests such as aphids, mites, and whiteflies, as well as fungal issues like powdery mildew.
Its active compound, azadirachtin, disrupts the feeding, reproduction, and growth of insects, making it an effective and environmentally friendly alternative to synthetic chemicals. Additionally, Neem oil is biodegradable and safe for use around beneficial insects, pets, and humans when applied correctly, making it a popular choice for organic gardening and integrated pest management.
Neem Oil Recipe
Mix two quarts of warm water with a 1/2 teaspoon Castile or other mild liquid soap. While stirring, slowly add 3 teaspoons of pure Neem oil to the mixture. Combine the Neem oil, soap, and water then pour into a spray bottle and shake well to create an emulsified solution. It's important to shake the solution thoroughly before each use to ensure the oil is well mixed. This is a food safe mixture.
How to Apply
How to apply: Spray the Neem oil solution directly on affected plants, making sure to cover all parts of the plant, including the leaves, stems, and undersides of leaves where pests often hide. Spray in the very early morning or evening.
Repeat Applications: Neem oil is not an instant-kill insecticide. It works by disrupting the feeding, growth, and reproduction of insects. For best results, reapply the Neem oil mixture spray every 7 - 14 days or as needed, depending on the severity of the pest infestation. Be consistent with your applications to break the pest's life cycle.
Use as a Preventive Measure: Neem oil can also be used as a preventive measure to deter pests from infesting your plants. Applying it regularly before pest problems arise can help protect your plants from future infestations.
Storage: Store your Neem oil solution in a cool, dark place. Neem oil can degrade if exposed to sunlight or extreme temperatures, so proper storage is important to maintain its effectiveness.