I know this doesn't qualify as hardware but I couldn't find anywhere else suitable to post reagrding this... Basically is this product ok to use for cleaning pcs internals? I bought some thinking this would obviously be the case (especially given the place that's selling it) but after using it I'm not so sure? It left a frozen almost liquid patch on things that, although dried off fairly quickly, didn't look a good thing to be spraying on internals. I probably had the canister too close but I've never had this problem with other compressed air, such as the one available from a well known office store.. I'm installing a new psu soon so I'd like to have a little clean up while I'm at it. Is this stuff safe to use?