Tobacco decoctions are a natural and effective pesticide. unlike the synthetic neonicotinoids that kill beneficial insects and pollinators, the half life of tobacco decoctions is only hours.

“This is very effective for controlling aphids and other soft-bodied insects infesting vegetable crops.

• Tobacco decoction can be prepared by steeping 500 g of tobacco waste in 4.5 litres of water for 24 hours.
• Dissolve 120 g of ordinary bar soap separately in another vessel.
• The soap solution is added to tobacco decoction under violent agitation.
• Dilute this stock solution 6-7 times before spraying.”

Source: Tobacco decoction