After the white shield worm appears on the cactus, it is treated with a brush. In the case of a small number of white shield bugs, the vermin and eggs can be cleaned up directly using a brush, and if the number is larger, the brush can be used to dip the diluted alcohol solution and apply it to the leaves.
The pest can be eliminated by purchasing a special oxidized fruit or insecticide agent from the market, diluting it proportionally, and spraying it on a cactus plant.
After the white shield aphid appears on the cactus, it is also possible to raise insects such as ladybugs and aphid wasps to prey on all the pests on the plant. But this approach is slower to work.
Watering unpolluted rivers and lakes, soaking all the soil, you can also put the cactus in a sunny environment for maintenance, so that the plant can normal photosynthesis, but also for the cactus to provide balanced inorganic fertilizer, so that the plant absorbs enough nutrients.