I'm curious to know what size tube the OP is patching. I am running 23s and have had trouble getting patches to seal.
Also, has anyone tried these patches?
48pcs Rubber Puncture Patches Bicycle Bike Tire Tyre Tube Repair Cycle Patch KIT | eBay
It seems a waste to buy a new patch kit simply to get a few more patches when the glue is still good.