Eclipse is probably not the best stuff to splash about. It's 100% methanol, which can be fairly aggressive to some substances. I doubt it would cause any problems, but I'd rather not chance it. And it's expensive - nearly a tenner for just 65ml.
Optical Wonder is 40% water, 35% propan-2-ol and 25% ethanol, a much gentler mix. But still a bit expensive at nearly £10 for 100ml.
A very good lens cleaning solution is 60% propan-2-ol in water (maybe with a drop or two of fairy liquid). You can get a 500ml bottle of propan-2-ol for just a fiver - LINK. That should last you a few years.
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