Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: My tubs came with the top few inches as hard as a rock. there are a few inches of granules at the bottom. Is that the way it's supposed to come?
Document: Poor design caused it to be messed up as soon as I got it.The bucket has a tray that is supposed to be in the top of the bucket. This tray is covered in calcium chloride which collects the water and then drips it down through the tray and into a bunch of absorbent stuff in the bottom of the bucket.I got this and noticed the bucket was bulged in a strange way. Upon inspection I saw that the tray had turned slant ways in the bucket.
with a paper like film on top. Well, that is all fine and good, except for the shipping process. I don't know how the 1 out of the 8 made it intact, but the rest were so bad that I worried that it the mixing of the top/bottom reagents would ruin the process. One tub was crushed so badly that product was pouring onto other things in my box... it was a real mess.
I considered an electric model, but they are hard on the electric bill. With research I found that some of the electric models are prone to fires. This seemed to be a safer way to go, the jury is still out as I haven't had it in use long enough to be able to appreciate any change in the humidity of the room.
My kitchen sink sprung a leak while I was out of the house. By the time I came home the cabinet was so wet that the bottom on the cabinet was warped and bowing. I put this tub of DampRid in the cabinet and 24 hours later it was bone dry. I couldn't believe it! Hopefully I won't need to use this again, but it can be used again since it hasn't even reached its capacity. I am really, really impressed with this product.
This was such a bad Amazon experience. The tubs came cracked and open and worst oozing. They've got the worst kind of solution that it just hangs around forever. Do they work? Maybe... I don't know because they were open in transport they came w/ some black discoloration already so I guess it was soaking up the warehouse/ups truck moisture.Here's my advice. I do believe in the product, but don't get it from Amazon.
The plastic container is distorded, it seem like the granules inside are dark, and the date on it is August 2013. I do not know if it is the date it was put on the market or the expiration date. I do not like it because it seems like it has started taking care of other humid environments. Wish it could be replaced or  price reduced accordingly. Also bought the Damprid FG 60 refillable and the Damprid refill, and those came in perfect condition.
I did not quite appreciate how large this thing is. it is like a big gallon ice-cream bucket. One issue is that it is not refillable. It has a paper seal over the top that you leave on, and no upper basekt like the units I am familiar with (that you can refill).
One opened during shipping and some of the contents came out. It was still usable but this should not be. Hopefully when they respond to my email, they send me one to make up for loosing 1/3 of the contents in the shipping box.
The instructions indicate to take off the plastic top and place the bucket on a flat surface. There is no moisture collecting in the bucket and it seems that its because there is a foam cover on top of the product. I asked a contractor who happened to be at my house and he told me to remove the cover and see if that works. I haven't. I wont buy this again.
This product does EXACTLY what it is supposed to do. Nothing more, nothing less. We had been buying this product in smaller quantities and it can get pretty expensive. Big bucket = better value, especially when combined with Amazon Prime.
Answer: The entire tub of granules should shake loosely. If the top section is hard then it was exposed to moisture. It will absorb moisture and 'shrink' as it absorbs more moisture down to the indication line.