In your spray bottle (or a large jug), combine your water and vinegar. I like to mix my cleaner in a bigger jug to prevent any mess and then pour the finished product into my spray bottle.
Very, very slowly, add your bicarbonate of soda – it is very important not to dump all the bicarbonate of soda in at once, if you do you will get the volcano effect, think dropping a mint in a Coke bottle. This is where mixing in a jug comes in handy: you need to very slowly add the bicarbonate of soda letting the foaming action dissipate as you go, a bigger surface or size of the nozzle to jug will reduce the mess.
Add the juice of ½ a lemon or orange. The juice of half a lemon will make the room smell clean and fresh, and will aid in the process of cleaning.
Add essential oil (I recommend adding tea tree oil).
Close the bottle and shake well (the ingredients may separate with time, just shake it before each use) Now you are ready to get cleaning!