Keep in mind that having the spots disappear is part of the normal life cycle of ICK. This is one of the many reasons for misinformation on this topic - people often try "snake oil" cures then see the spots disappear in a couple of days.
(Not trying to be negative, just offering a reality check
)
I'd suggest reading up on the stickies on the top of the "fish disease" forum on reefcentral.
FWIW, I second pretty much everything that Matt and Bob have said;
Ick can be eradicated, OR it can be managed but not eradicated. Either approach has it's risks and merits. Also, UV, cleaners, slight hypo (anything higher than 1.008-1.009), elevated temp, garlic and any "reef safe" treatments WILL NOT eradicate the parisite - these will all help to manage ick but will not kill it off.
Also, at the least there IS some debate about cleaner fish/shrimp. It has at least been said that the cleaners don't really do much for the parisites and that the cleaners mostly just clean dead/damaged skin/tissue from the fish. I can't claim to know for sure the actual facts (I don't think anyone knows %100 for sure), but it is another debate to consider.
In the end, you've got to decide weather your goal is to eradicate or manage the parisite. That decision will guide what will and will not make sense/help. When people are unclear on their goal bad things often happen.
If you happen to decide to opt to try and catch and treat all your fish (?) I can loan you fish traps and possibly a hosptial set up. Shoot me a PM if you want to talk about that.
Best of luck
jk