How much leak is acceptable?

I've dropped one of my tires off to have a pinhole leak fixed twice now. It's a tiny leak that just barely foams with soap water. My expectation has been that it should completely stop leaking if/when they patch it (in theory they are taking the tire off and patching it from the inside; there's no sign of "plugs"). Before I take it back a third time armed with dish soap/water and explain that I expect these leaks to be completely, absolutely sealed up, I wanted to check and make sure my expectations are reasonable. Do they have some kind of "allowable" limit below which they don't worry about a pinhole? (Does this even make sense?)

 

[corkey]

in the real world a tire repair, means REPAIR<<< it should not leak , show them the leak tell them to do it right,,,,,

 

[Blacksheep Josh]

make them put it in the dunk tank. i know my father had that problem, and the guy couldn't find it until it was put under water. maybe the "repairer" can't find it because it's so small.

 

[toypaseo]

Zero leak is acceptable. Find another tire shop.

 

[MrShorty]

Thanks for the replies. I was expecting them to get those to seal, and it sounds like my expectation is reasonable. Time to put my "disgruntled but diplomatic customer" hat on and see what I can do.