Two-day sales can be attractive if you have lots of merchandise to sell. Dedicated garage sale shoppers get up early, so expect the biggest crowds at 8 a.m. or even earlier. Afternoons seem to drag at garage sales, so consider an 8 a.m. to noon sale on Friday and Saturday, for instance. Sundays are generally poor days for sales. Just after payday is a shrewd time for a sale, and just before college or public school classes begin in the fall is also a time when buyers are looking for bargains.
Some people like to use gimmicks such as a surprise grab bag for a quarter.
Consider letting you children sell their own things and keep the money. Early Birds Decide in advance what to do about early birds. It's up to you whether to let them shop early or not. There are two schools of thought on this. The sticklers say opening time should be advertised and everyone should abide by it.