As with each creature of this world, you communicate with geckos in a unique manner. Start with simple thoughts like –
The feel of the wall. It is not up or down. It is not a feeling at all. It is an up and down thing.
Squirmy things like gecko tails. Twitching tails. Squeamy and squirmy.
Bugs. Air dwellers like me. Their flying capabilities. Minute pilots of their own ships.
Ninja-like, he is invisible. Like a perfect war machine of nature, he attacks on command.
Click! Click! Click! [pink tongue]
Chirp! Chirp! Chirp!
This is the war cry of the gecko world.
Bye bye little fruit fly.