USELESS!
Agree with all other reviews. Sent off for sealant spray advertised on social media. Looked normal spray paint can size on Facebook guessed 500ml. I ordered two to fix leaking shed roof.Product eventually received - 30ml. They are tiny. Extremely misleading advertising and very, very expensive. And one has leaked inside its packaging. Waste of money. I won't believe another word of Magoloft advertising.