How long after an extraction until you don't have to worry about dry socket?

More than 2 weeks: Dry socket typically happens about a week or 10 days after an extraction and you would have severe pain.

Ten days: Dry sockets do not form ten days post op. If you think you have this condition, contact your dentist immediately for proper treatment.

Depends: Average is 10 days but it all depends on the treatment done, the skill of the dentist/Oral surgeon & you overall health. I see people with most issues within the 4-5 day more and then a total separate group around the 25-30day mark (usually about 5% of patients experiences issue after treatment in my experience). So it varies but just keep it clean and most people are out of the woods in 10 days