Shower Spray Refill

[lindaghh]

I really like shower spray, I find every other day works fine too. I do object to having to discard the spray bottles though. Is there a cheap refill solution? not vinegar though!

Lemon juice diluted with water (1/3 lemon to 2/3 water). Fill an empty spay bottle and use to clean shower and screens. Destroys limescale and mould and costs about 10p per refill.