The cartridge is quite large and I think it will last long. - Used this to seal the window frame gaps in my 2bhk apartment. - Sealed all the windows and still 50 percent of the cartridge is remaining. - It's transparent, so choose it according to your use.
Just One con about this product: Ensure that this DOES NOT come in contact with your skin. A small drop of this got stuck to my forearm and now I've got burning sensation on that section since 2 days.