Using a bagger helps control lawn disease naturally, encourages new grass growth, and acts as a natural crab grass and weed control. It can help increase curb appeal of your lawn. When you bag your grass clippings, you create a crisp appearance and a highly manicured professional finish, with defined striping, no grass clumps left behind, and grass less likely to spread to vegetable gardens or flower beds. Bagging your clippings is a huge time saver. It’s faster than raking and you won’t have to mow as often as mulching.