Window vac what do you use with it??

[dancedinthemoonlight]

I've bought a window vac and I love it but I've used all of the detergent that came with it just cleaning the inside if my windows can I use any window cleaning spray with it or am I best off sticking to the detergent that is recommended??

I've used both a vinegar water mix and a very weak washing up liquid mix in mine and both seem to work ok.

Thanks elliptic will try that