Vax hard floor cleaning liquid alternatives?

vk2003

I have a Vax All Terrain (V125) cleaner which does carpets and hard floors. The hard floor cleaner bit is brilliant, except that the cleaning liquid is prohibitively expensive for anything other than occasional use.

Does anyone else use any other cleaning liquids in this machine and find them OK?

Ionkontrol

Define hard floor?

vk2003

In my case, it is vinyl tiles (karndean) - so a sealed floor to all intents and purposes.