I purchases 6 tanks of 602 foam, over $4500 worth, and when I got a bad bottle they would not help me out at all. They wanted me to buy another $300 tank. When I used all I had for a roof project and needed one bottle left to finish and start roofing, they would not even sell me another kit at full price. They said if I took down my reviews and wired money they would. The customer service is a joke and they are just trying to rip you off. Then they want to blackmail me to finish my job. STAY AWAY!