Yes! ^ ^ ^ And turning on the oven to bake substrate or wasting space in your freezer (displacing ice cream & ice cubes) for it this time of year makes little sense to me.
Re- setting it in the sun: best way is putting it into or on top of a clean metal trash can in the sun, for maximum heat. Turn it over at least once.
(I don't do either one, since I don't use the same substrates for my snakes that most of you do- & what I use -paper derivatives- does not harbor insects.)