BLOCKBUSTER is made from pure, long-lasting paradichlorobenzene that has been saturated with the finest liquid deodorants available and fights odors for up to 14 weeks. Every block is 100% deodorant and is individually wrapped. BLOCKBUSTER is specially formulated for deodorizing sewers, elevator shafts, dumpster areas, garbage collection areas, industrial plants, waste water treatment facilities and anywhere a strong, undesirable odor needs to be eliminated.