Rocks and pebbles.

1 seconds sound clip from The Ant and the Aardvark (1969) - Scratch a Tiger (S1E9).

You can hear this line at 00:00:47.033 in the Blu-ray version of the episode.

Quote context

[...]

- The only safe way to get over to that island is to tunnel under the ocean. And then, oh boy, will I have a feast.

- Well, Honolulu is about 2000 miles from here. But with him on my tail, I ought to make it in 15 minutes. Down, boy, down. Take it easy!

- Being an aardvark isn't easy. To exist, he needs a pound of ants a day. That's a lot of ants.

- Anybody home? They don't fool me. I know they're down there.

- I'll give them the vacuum treatment.

- Rocks and pebbles.

- Here comes that aardvark doing his thing again.

- Hey, Tiger.

- Yeah, yeah, yeah? Oh, hiya, Ant.

- Remember when you had a thorn stuck in your foot and I pulled it out?

- Yeah, yeah?

- You said anytime I need a favor, just ask. So I'm asking.

[...]