How Much Washing up Liquid to Kill Aphids?

Mix together 1 tablespoon of dish soap and 1 quart of water, or 5 tablespoons of soap per 1 gallon of water if you have a lot of plants to spray. Mix the solution thoroughly, and pour it into a clean spray bottle.

How much fairy liquid does it take to kill aphids?

Mix 3 tsp of washing-up liquid with 4 cups of water. Add the mix to a spray bottle. Spray the mix over the affected plants. Don't forget to cover the leaves (including the underside), stems and buds.

Will washing up liquid kill aphids?

The most commonly used non-chemical remedy is to spray them with soapy water. You can buy insecticidal soaps but many people make up their own using a teaspoon of washing up liquid diluted in 3 litres of water. The aphids are unable to breath under a coating of soap and subsequently suffocate.