No, pasteurize the potting soil, I use a 2:1 ratio of dirt to boiling water, put the dirt in a 5 gallon bucket, pour in the boiling water, let it sit for a day.
It would be best to let that soil fully dry out again before using it, just to be sure, but it is now wet and okay to use right away.
Do not use that "Garden Safe Fungicide" if it has permethrin or pyrethrin in it, I tried it for thrips and it fried my leaves.
Honestly, if you pastuerize first and then use the Bits, you won't need anything else.