Is second hand potting mix fine to use?

[Richard Hole]

Hello

I pot my Sarracenias in two parts sphagnum based peat moss and one part perlite. I am repotting some of the plants that I potted one year ago in order to divide them. I am pouring the potting mix out of the pots into a tray during the process. Should it be fine to use this second hand potting mix for the Sarracenias I pot up. It is only a year old so it may still be good. It contains some moss and sundews that grew on the surface. Would it be best to dry the potting mix out in the sun for a week to kill any possible fungi in the soil or would it be unlikely that this would be a problem.

Regards Richard.