Magnetic Window Cleaners

[searchlight]

Those two piece window cleaners where you guide the outside unit with a matching one on the inside, you know what I mean? Has anyone used one and what results did you get? Are they any good?
Thanks

[sara3]

I nearly bought one from Ebay, but the window cleaner at work laughed and said they were rubbish!

[AlBags]

You always lose half of it when you take it off : )
Forget it .. crap.

[Toureman]

I had one and they do a good job, If your to stupid to tie some string to the outside pad don't get one.

[heathfield]

I tried them and found that the magnetic force was too strong - they stuck together so well through the glass that I couldn't slide them around. Useless.

[waterbabe]

Dont bother they are rubbish and dont work on double glazed windows