I've tried Wizard for a several weeks now and they have been out with a blurb talking about irregular supply, wth? Anyone been able to buy any lately? Hopefully @BadThad gets back to me so I can order some!!
This has recently been discussed in these threads: 1. https://www.cointalk.com/threads/should-i-clean-them-if-yes-how.363521/ 2. https://www.cointalk.com/threads/verdicare-never-in-stock-replace-with-classic-coin-or-ms70.364262/. Your only hope is to see if Badthad can set you up with some that is perhaps old stock. Otherwise, it's looking bleak that you will be able to find any.
Ask him if he plans to return to production of the product in the future. If not that might be a licensing opportunity there for someone to licence the right from Badthad to manufacture it.
When I use it, I put a drop on the coin and then rub it in with my fingers. If I need more, I use another drop. Let it sit and then clean off with a tissue.