Review on Powerful Cleaning Agent: Savogran 10622 Trisodium Phosphate (TSP) 4.5lbs by Shawna Lamb

This is the second box I ordered that was made from a solid brick. It is packaged in a cheap cardboard box and when wet turns the product into an unusable brick. I've tried repeatedly to throw it on the cement and smash it with a knife, but to no avail. I end up throwing away 95% or more. I'm really disappointed because I love this product but the way it comes makes it rubbish. How difficult would it be to ship it in a sealed plastic container?