It was a missing item in the last flood, when there was flood damage. Although it is under the influence of the typhoon this time I could buy it. Considering the frontage of our home garage etc. I thought it was reed with 20 pieces, but I think that it is necessary to increase the purchase somewhat because it seems to be effective only after layered.
In preparation for a strong raincourse rain, I arranged it at the bottom of the factory entrance shutter. Because it takes quite a long time to absorb the product, it takes a considerable amount of time to prepare, unless there is a vast aquarium, even for about 20 things.