As well as size and capacity, shredders are classified according to the method they use; and the size and shape of the shreds they produce. 1  Strip-cut shredders use rotating knives to cut narrow strips as long as the original sheet of paper.
Thoroughly and regularly clean areas where you find adult fleas, flea larvae, and flea eggs. Vacuum floors, rugs, carpets, upholstered furniture, and crevices around baseboards and cabinets daily or every other day to remove flea eggs, larvae, and adults.
I caught one flea, then I went to the diatomaceous earth-along-the-edges and vacuum approach combined with a flea trap every night. The flea trap did turn up a flea once in a while for two weeks, and no more after that. My first attempts at flea control with diatomaceous earth on carpet were to just sprinkle and not spread it to make a paper thin layer. This had mixed results. My sprinkle without spreading, covered about 20% of the surface.