for the cost of this bag , you be not go to get a dustless system . it certainly do not collect all sawdust , but it catch a good part of it . I find after a few dozen cut the bag fill up , but there be plenty more dust under and all around the saw base . but what the bag catch be that much less for I to vacuum , so I be happy with that . the problem lie more with the Bosch tablesaw , which do not direct all the dust down the chute - for that to happen , the saw would need a major redesign . the current design simply have a channel under the blade lead to the chute in back , but it be open , so the spin blade kick dust in every direction , not just down the channel and chute . I find that the blade I be use make some difference too - a 40-tooth blade send more dust down the chute and into the bag than a 80-tooth blade . the latter probably make finer dust , more prone to be scatter .