Scabies is a contagious disease caused by a mite. Mite doesn't survive beyond  36 hours outside human host. So don't need to disinfect mobile laptops extra. But wash 2 days of clothes, bedsheets and bedspreads. And all the family members should be treated simultaneoysly. Maintaining hygiene will help in preventing from acquiring this infestation. But mite will be residing in pets also hence it's necessary to treat pets as well