These notices can be given on any day of the month, and the notice period begins to run immediately. Regardless of when the tenant physically vacates after the notice, the tenant remains responsible for paying rent during the rest of the notice period unless the apartment is re-rented
只给了2天提前通知，可以扣他的deposit吗？房子在加州。
https://www.scu.edu/media/offices/student-life/off-campus-living/Terminating-a-Tenancy-English.pdf
These notices can be given on any day of the month, and the notice period begins to run immediately. Regardless of when the tenant physically vacates after the notice, the tenant remains responsible for paying rent during the rest of the notice period unless the apartment is re-rented
加州要求月租房客提前30天通知搬出，30天从通知天开始算。如果他仅仅提前2天，他欠你28天的租金。
当然如果你提前找到下一个房客，你只能扣实际空余天。
https://www.courts.ca.gov/selfhelp-eviction-security-deposits.htm?rdeLocaleAttr=en
A security deposit .... may be used to cover damage to the property, cleaning, key replacement, or back rent.
加州允许用押金用来做欠租。你可以扣28天的房租。加州押金需要在房客搬走21天前退还，所以你可以等到第20天说还没有找到第28天入住的房客，所以扣28天。