To make the spray:
Citrus peel - any type of citrus will do. Remove any pulp and as much of the pith as you can. Place the skins in the jar and top up with white vinegar. You can keep adding more peel over a week or so until the jar is full. Always keep the skins covered by the vinegar.
White vinegar - don't be tempted to use brown or apple cider vinegar as it may stain some surfaces. If you can find a bulk supply of white vinegar it makes it much more economical and zero waste with refills. I understand that The Source stores are stocking white vinegar now but you may need to check your local store.
Store the jar in a dark space for 3 weeks to "brew".
Use a small funnel to pour the liquid into a spray bottle.
We use this for the kitchen, spills on the floor, the bathroom and anything that need a wipe over.
It works so well that we cleaned the interior of our caravan with just a combination of this spray, bicarb soda and elbow grease. We used it on the oven, floor, fridge (inside -ew and out) and all of the cupboards and surfaces. It looks better than it did when we took delivery of it.