If I improve hygiene is improved can scabies be prevented?

Not necessarily . Hygiene will not stop it . If you are exposed to someone who has it then you could get it.
Yes, that may help. Since scabies mites have to get from one infected person onto another person, and then burrow into the new person's skin, improved hygiene can help stop the transmission. For example, a person can wash his clothes and take a thorough shower after playing with others. That way, scabies mites can be washed away before they have a chance to burrow into the person's skin.