[General] Sawdust bags sitting out before pasteurization question.

So I have a large bulk pasteurization unit that holds 55, 10 pound sawdust bags. I went to fire It up and some stuff isn't working correctly on my steam barrel so long story short I wasn't able to pasturize the bags I made and they have been sitting there for 4 days and will need to wait untill Monday which would be 2 more days to get the part I need to fix it. Would I be okay to go ahead and just pasturize the bags even though they probably have some stuff growing in them already and hope it kills it all or would that be a waste to time and energy?