You know, this plan never fails. Especially when you're trying to catch an ant that's hooked on sugar.

5 seconds sound clip from The Ant and the Aardvark (1969) - Never Bug an Ant (S1E6).

You can hear this line at 00:05:12.026 in the Blu-ray version of the episode.

Quote context

[...]

- If that ant got half of what I got, he's in big trouble.

- Pow!

- Aha! Success at last.

- Hey, Ant. What do you think of that?

- I know what I think of that. But I shouldn't say it in public.

- You're probably wondering what I'm gonna do with this shot put. Well, I'll show you.

- You know, this plan never fails. Especially when you're trying to catch an ant that's hooked on sugar.

- Looks like old Sam's at it again. Well, I might as well play along with him.

- I got a bite, but I'll let him run a little, till he gets tired out, then I'll yank him in.

- Okay, Ant. This is the end of the line.

- Well, now that's life. And how sweet it is.

[...]