How full do you let your vacuum bags get? Normaly I'll do it until a little under the fill line but I'm trying to save money so now I'll let it go up to the fill line.
Most of our dirt is husky hair, so we reaplce bags quicker than 'pure' dirt.
depends on which machine I use, if it is a dirt devil deluxe or MVP that takes the "c" bags I let them get topped off. if it is my kenmore canister I change it when it is full. Eureka F&G I usually change it when the bag gets stiff.