Anyone got a better mandarin trap?

[mandarin chick]

I am trading my target pair and they were originally in my 110. the male caught in a bottle trap immediately (1L plastic bottle cut in half, the 'neck' cut off and then duct taped in reverse into the bottom half, and of course food put in the inside). The female isn't biting.

Any other trap ideas for the female that doesn't involve removing all the rock and chasing her around?