What is Saudi Arabia doing about Houthi missiles flying from Yemen over its country targeting Israel?

I Googled for it. The only related news in the search results mentions that some of the missiles crash into or disintegrate over Saudi Arabia.

Are the Saudis really not doing anything significant about it or are not willing or not capable? 

I presume, the Saudis at least provide valuable intelligence about the Houthis to Israel and the US.