right, I've had a look & theres a 'catch' that you flip open. First of all theres a 'button' which when pressed in releases the bottle & just by this button theres a flip open catch but you can only open in one way, so if you find it & it doesn't open, then try the other way. (just to add, I never used to buy the expensive flash stuff once it ran out, I just released the top of the bottle & refilled it with diluted floor cleaner!!). Do hope this helps. I probably still have the leaflet that came with it if you want me to send it on to you but obviously I'd have to have a look to make sure I've still got it & secondly I guess its not a good idea to give addresses out on here but then you could give me your email address? anyway, have a try at what I've said & if no joy, get back to me. good luck!