That the tops of the juice bottles can be removed. Not the cap but the spout/tip can be taken off. 3 years of vaping and NEVER knew this. Only reason I even found out was when I ordered some empty bottles for DIY and noticed that the tip looked like a removable piece and assumed it was only on bottles for DIY so you can fill it easier but now I see that almost all of my bottles have that. Now I can wash out my empty bottles and use them instead of ordering more empty bottles. Wow. So amaze.


