T-Rex: Got FRIGGIN' COCKROACHES in your house? No problem!
T-Rex: They're tropical insects, cats and kittens!
T-Rex: Turn off the heat and wait for winter, and it's curtains for them!
Dromiceiomimus: But isn't it likely they'd just move next door where it's still warm, and then move back when it's heated again?
T-Rex: ...True. Okay, so you get your neighbours to live in the cold for a few weeks too! And by "neighbours" I mean "the entire city".
Utahraptor: But there'd still be cockroaches in other cities that could hitch a ride when someone moves!
T-Rex: Right.
T-Rex: Okay, so turn off all civilization for a few months; all the roaches die of COLD OVERDOSES. Except those in tropical climes, where there's no cold to kill them, and with international travel and shipping providing tons of ways for them to return.
T-Rex: ...
T-Rex: FINE, I GIVE UP
Narrator: EARLIER:
T-Rex: Kill all the cockroaches to win an iPhone 4? I don't see why not!
Off panel: You actually win TWO of them.
T-Rex: TWO IPHONES 4??