I was surprised to learn a few minutes ago that UV light might not be sufficient to render the virus inert. https://en.wikipedia.org/wiki/Poliovirus#Replication_cycle

>Drake demonstrated that poliovirus is able to undergo multiplicity reactivation.[23] That is, when polioviruses were irradiated with UV light and allowed to undergo multiple infections of host cells, viable progeny could be formed even at UV doses that inactivated the virus in single infections.