the snail can not eat its way out but is better to feed it insect only

I went back today and found that the leaf somehow sucked the snail in closer and the trap was able to close a lot more than it previously was..but still not all the way..i guess i am more worried that the leaf will turn black...
{{gwi:560280}}

I don't think I would worry about the one trap too much. There is a good chance it will start to turn black, especially given the bacteria the rotting snail may produce. But you have four other healthy looking stalks/traps that will keep things going.
Personally, if they are getting plenty of sunlight and are kept moist and unfertilized, I wouldn't worry with feeding them. They should do quite well on their own...

i know i usually don't feed them..but like the title said..i was REALLY BORED