Sea maiden it is not very funny if you have ich in your reef.
You have the following options.
1. Ignore it and hope it will go away.
2. Risk putting chemicals in your tank like rid ich and greenex
3. Removing all of your fish into a QT for 30 days and treating with chemicals
4. Removing all of your fish into a QT for 30 days and use the hyposalinity approach
5. Treat with garlic extract soaked foods in your reef.
In order for 3 and 4 to work you have to catch all the fish which means viturally taking apart your tank to catch them.
I have read many reports on this board about success with using garlic extract and also lack of success but I have yet to read a post where a reefer has indicated that the garlic extract treatment regimen has done any harm to their fish or coral.
It is not surprising that your LFS and industry friends would think using garlic is strange. They make a business out of replacing fish lost to ich, fungal and bacterial infections and selling hundreds of chemical ich treatments which do not work.
The "snake oil" comments are made by those who are dated in their knowledge about the latest treatments for ich and those who have never tried it.