You need to prepare alcohol and cotton swabs to remove the adhesive marks on plastic bottles.

1. First, prepare a bottle of alcohol as shown in the figure.

2. Next, take out two cotton swabs, as shown in the figure below, and soak them in alcohol.

3. Then wipe the adhesive trace on the plastic bottle back and forth with the cotton swab mentioned above, as shown in the figure below. Alcohol can dissolve adhesion marks.

4. Finally, as shown in the figure, remove the sticky marks of the stickers on the plastic bottles.