I'm not familiar with Repti Hand, but basic critical thinking tells us that sanitisers are a common thing, they're used in homes, hospitals, laboratories, etc etc. The concept of killing germs in universal, not somehow different with reptiles. If in some magical alternate reality a herp product was better than what was being sold in supermarkets, industrial suppliers, medical suppliers, etc etc, all these places would be buying the reptile product.
Boutique markets like this work because most people don't know much, so if you slap a reptile label on a reptile (or any other specialist label on a generic product) that market will recognise that the product can be used for their hobby. Naturally this will incur all sorts of additional costs (economy of scale, rebranding, etc). The benefit for the consumer is that they are told what to do without having to do any research. Unfortunately, many groups abuse this concept and, knowing their target market is naive, they are apathetic about using quality items and just use anything which seems like a vague fit, knowing naive people will be happy to pay extra for an inferior product because if they knew what they were doing they wouldn't be buying it in the first place.
If you actually want a decent sanitation product, look at what professionals use. I used to work in a medical research laboratory, I can tell you we certainly weren't using Repti Hand, and I can tell you what we were using was much cheaper and at least as good, probably better. Best case scenario they'll have made or rebranded something equivalent to alternatives at a premium price. In the lab we exhaustively examined all available products, they had to be effective. When you're working with/experimenting on humans it's much more serious if there's cross contamination or an adverse reaction to a product, or the product doesn't work.
