We're sorry to read about your disappointment with Scotts Turf Builder Halts Crabgrass Preventer with Lawn Food and appreciate your feedback. We're sorry that you were disappointed in the consistency of Scotts Turf Builder Halts Crabgrass Preventer with Lawn Food. We are always striving to develop the best possible products on the market. Should you feel clumping in your next bag of Scotts Turf Builder Halts Crabgrass Preventer with Lawn Food, you may want to drop it on the cement once or twice in order to break up any particles before opening the bag. If there are still lumps, you can break the lumps up by hand. Be sure to wear gloves when doing so. The clumping of the product will not alter the effectiveness of the product. Unfortunately, it is caused by moisture that gets into the bag, either during the manufacturing process or during storage at our many retail outlets. Over the years, we have spent several millions of dollars trying to eliminate this problem through improvements in both our manufacturing plant and through packaging improvement. While the situation has improved considerably, we still have some way to go, and we are continuing to work on it. We want you to be confident in our products. For this reason, we offer a product guarantee. If for any reason you, the consumer, are not satisfied with the results after using this product, you are entitled to get your money back. Limitations apply. At your earliest convenience, please reach out to us at 888-270-3714 if we can further assist.