ABS pipe cap came off and bathroom 4" sewer line and raw sewage is under house

Affected area is about 10 feet by 20 feet according to plumber that repaired the pipes.

How to treat the affected area to get rid of bacteria after sewage is pumped out ?

Cathyn - You will need to go to a lumber yard and get you a sack of ( LIME ) and spread it heavy all over wherever the sewage is at . It will kill all the germs and cut down the smell. I've used this under houses severl time, and it works real good. Good luck GOD BLESS> If my answer helps rate my answer below :::: F.B.E.

If this is a dirt floor crawl FBE gave you about the only thing that will work short of 50 gallons of bleach. Read the label on that bag of lime so you can see the keyes on your computer in the future.