Aphids

this time I will discuss about aphids .. aphids are a kind of small insects eats sap leaves .. and aphids are also often in ornamental plants, tree plants, vegetables and others .. maybe we are very difficult to eradicate him, but there are some way to eradicate aphid insects .. we have to spray often with water .. or can whit using chili, onions then mix witg water.. and then smoothed to be used.. thank