1. Principles for pest control

We all know that if pesticides are used, it will be harmful to people's health. Moreover, it will do some harm to the plant more or less. Therefore, in general, we try not to use these drugs, and it is best to use green methods. Only when the quantity is too much and has to be used, can it be used again

2. Handling of different situations

(1) When the quantity is small: in this case, there is no pesticide at all, and you can do it with your bare hands. If the pests are concentrated on some branches, they can be cut off altogether. If they are scattered, brush them off with a small brush. However, it should be noted that the branches climbed by the insects had better be cut off to avoid infection. This method is more environmentally friendly, but sometimes it doesn't apply

(2) When the quantity is large: if it is not too serious, you can use your own insecticide. Specifically, soak the tobacco in water and add some detergent. Soak for a day and spray on aphids. It's OK to soak cigarette butts in hot water. After making it, use it to spray insects. In this way, it can get good results and no harm

(3) When the quantity is very large: if the quantity is too large, the self-made will not have enough effect. At this time, only pesticides can be used. However, it should be noted that if only one species is used, the insects are easy to develop resistance. Therefore, two or three replacement is the best