Any tips for getting the Zoflora smell to linger?

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I have recently become addicted to Zoflora (I have the Lavender one) and I love the smell, but it doesn't seem to last very long.

I have made up a spray in the right proportions and have been cleaning all kinds of things. What can I do to help the smell persist though? Any tips?

I spray my curtains with it (diluted) and wipe the radiators with it neat. I cant really smell it while im in the house but once I leave and return you do get that lovely whoosh of zoflora.