I just got the gold+shield squeeze tubes yesterday and drenched all my audio related cables with q-tips (gold followed by shield, I ordered regular deoxit but they sent me gold instead, I made up by using 1/3 of the gold bottle
). If there's an audible change after treating 15 cables it is not enough that I could feel confident about it, I'd have to A/B which isn't possible after treating.
Btw the squeeze bottle version is 100% concentration, while their sprays come in 5%, 20%, and 100%. Since it's so concentrated I think one drop per connector is more than enough, you could save more liquid by using tiny brushes instead of q-tips.