The condom should be inserted in case of sexual intercourse with penis erect.
The condom must first be placed at the tip of the penis. Then the penis should be rolled towards the root.
The condom, the penis should cover as much as possible. It should not just be on the edge.
If possible, the penis and vagina should not touch before the condom is attached. Even if the penis touches the vagina before emptying, sperm cells may still be present and the risk of pregnancy may come into play.
Each condom is for one use only. The same condom should not be washed and used again.
A variety of materials should not be applied on the condom to lubricate. These materials can lead to rupture of the condom.