Mr and Mrs T

Thats kinda what I thought, just wanted to make sure. How long is too long to hold onto a TB? We are planning a trip to Hawaii and we wanted to take a bug or two with us. Thought I'd go grab a couple a week or so before the trip.

Ok we are new to geocaching so try not to laugh at my question.... If you take only a TB from a cache do you still leave a trade item? I mean you are not really trading anything, right? I just didn't know what was proper geo-etiquette in this case.