The lockdown idea is appealing but the devil is in the details, you have to limit group sizes. If the transmissible window is say 3 days, and the group size limit is 5, that's a 15 day lockdown. In practice big households are impossible to limit so in theory if you don't lock down for O(household members) you waste time.
If literally everybody stays home you can stop a disease like covid19. Otherwise, even with draconian countermeasures it will take way too long to snuff the thing out.