I wish you a lot of luck, if you lived closer, i'd lend you a trap.
keep us posted on what happens. I did the same thing, but i didn't spy my kittens until they were about 12 weeks old and i didn't catch them until they were almost 16 weeks. They all had ringworm AND eye infections.

I still have one of them
this is when i first got her:


here she is all grown up: