Alternatives to rubbing alcohol for cleaning track

[RobertInOntario]

Hi all,

I used to use rubbing alcohol to clean my track which worked really well.  Well, for obvious reasons, rubbing alcohol is almost impossible to find. Can anyone recommend any alternatives? 

Out of desperation, I started using some Humbrol enamel thinner -- I dab a bit of this onto an old T shirt/ rag and it seems to be cleaning up the grime nicely!   I might continue using this but could it cause any problems anywhere?

Thanks in advance,
Rob