Getting ready to gas the house

It's that time of year when the house needs to be gassed to kill off all the fleas n cockroaches.
Girls have the Force Kleptonium Barrier activated around them. Wifey and I will be out to watch Inception while the gassing goes on.
For those who are not familiar, water is poured into these canisters which start to shoot out smoke so it's not really gas ^^;