Is there any way to make pesticides from plants?

Leek leaves with leek 1 kg plus 100 grams of water, mashed and squeezed to extract the original liquid. The effect of controlling red spider and cotton aphid by adding 8 kg water spray per kilogram of raw liquid is about 90%. Green onions use 1 kg of green onions to add 400 grams of water to extract juice, 6 kg of water per kilogram of skin liquid, stir well and spray, which can control cabbage insects, aphids, borer and other pests. Tomato leaves are mashed with tomato leaves with a small amount of water, remove dregs to take the original liquid, stir evenly with 3 parts of the original solution and 2 parts of water, and then spray with a small amount of soap liquid, the control effect on red spiders can reach 100%. Towel gourd leaves are mashed with towel gourd leaves plus a small amount of water and dregs are removed to get the original solution. The mixture of 7 parts of raw liquid and 13 parts of water and a small amount of soap solution mixed with uniform spray had more than 90% effect on the control of cabbage insects, red spiders, cabbage borer and other pests. Pumpkin leaves are mashed with pumpkin leaves with a small amount of water and dregs are removed to get the original solution. The effect of controlling aphids is more than 90% by mixing 3 parts of raw liquid and 3 parts of water and then adding a small amount of soap liquid. Cucumber vines take cucumber vines in the proportion of 2.5 kg plus 1 kg of water and mash them. The effect of controlling cabbage green worm and vegetable borer is more than 90% when the raw solution is diluted with 5 kg of water per kilogram. When the cotton aphid occurs, the peanut leaf is mashed and squeezed with fresh peanut leaves with water, according to the proportion of 2 kg leaf juice and 3 kg water, then some soap liquid is added, and the cotton stem and leaf are sprayed to kill the cotton aphid.