Easy to use and with the newer one (Yes, I have two) there is a switch on the back so you don’t accidentally bump the distiller into use with no water. In the photo is a pan full of (probably) calcium carbonate that has accumulated in the year since I purchased my first distiller. (No, I don’t clean it out very frequently and yes, I pour them out each time I fill up the tank with water).My bottle was plastic… which is fine by me since I have clumsy fingers.