Ontario Premier Doug Ford says only essential workers should leave home unless it's for getting groceries or other absolutely necessary reasons.
To drive home the message, Ford says another emergency alert will go out on Saturday.
Ford says tens of thousands of lives are at stake.
Ontario is projecting between 3,000 and 15,000 lives will be lost to the pandemic even with stiff stay-at-home restrictions.
Ontario is reporting 27 more deaths from COVID-19.
The provincial total is now 94 deaths.
Ontario also reports another 375 cases of COVID-19 for a new total of 3,630.
The province lists 1,219 cases as resolved.