Mantis! HELP !

Unsuccesful with the bottle trap : (

Unsuccesful with rinsing the rock : (

Looks like hammer and chisel to the rock -

I first found the rock he was in and rinsed under sink spigot nothing
came out (although I hoped he may have went down the drain)

Left the rock I saw him in out in the air for awhile - nothing came
out

Since this is a new tank, when I put the rock back in, I spread all of
it across the bottom unstacked, and put two bottle traps w/
silversides in them in as well . . .

After 3 days nothing, (he must have went down the drain!)

Removed bottle traps - arranged rock to my liking (again and again and
again)

Guess what I saw last night? Peeking his evil head out from the
largest rock on the very bottom of my aquascaping?

Set another trap an nothing this morning but some snails that had
found their way into the trap - - -

I can shine a flashlight into the hole he is in and see him back there
- snickering -

Time for hammer and chisel?

HELP !