barrier

[Rovvov99]

There is no real ratio, you will have figure it out for yourself a little. Make sure it isn't too thick though, or else they will walk right through it.

[larynx]

i havent tried that yet, but i use ky jelly around the top and it works pretty well.

[AntsAreUs]

Talcum powder and rubbing alcohol tends to get very messy in the long term, the absolute best in my opinion is fluon, byFormica sells small bottles of it on amazon and TarHeelAnts I think sells it on his website?