>buy a pint spray bottle
> mix: 50/50 white vinegar / distilled water. (I use the hvac or dehumidifier condensate rather tha distilled water)
> optional: add fragrance (essential oil or hot tub fragrance)
I use similar for cleaning almost everything other than electrical items where I swapped the vinegar for isopropyl alcohol (I think it's called rubbing alcohol in the US)
Very heavy kitchen stains were sprinkled with bicarbonate of soda prior to spraying, left for a minute or two then scrubbed.
The only other cleaning product I bought was caustic soda for drains and very bad ovens.