If someone hasn't already called you out on Facebook to take the ALS Ice Bucket Challenge, well, your time is coming.

The ALS Association announced on Friday that it had surpassed a significant benchmark: It has raked in more than $100 million from funds donated throughout the duration of the challenge.

See also: The 60 Best Celebrity Ice Bucket Challenge Videos

The figure dwarfs virtually any fundraising effort that ALSA has conducted before. Donations for a given year usually total $64 million, according to the ALSA. It has almost doubled that figure in one month, from July 29 to Aug. 29.

More surprising, perhaps, is that the ALSA didn't even launch the challenge. It began as a grassroots effort by Pete Frates, a 29 year-old Massachusetts man and athlete who has lived with ALS since 2012 and Jeanette Senerchia of upstate New York, whose husband, Anthony Senerchia, has had the disase for over a decade. When she posted her own Ice Bucket Challenge on Facebook, it triggered something on the social network and soon 1,000 people across the country were dumping buckets of ice water on their heads. Senerchia's act inspired Pat Quinn. Diagnosed earlier this year at 30, the Yonkers, NY, native got 50 of his friends to also take the challenge, and may have sparked itse viral nature by having each one of them also nominate three friends to pour buckets of ice on their heads or donate $100 to the battle against ALS.

For all its success, the Ice Bucket Challenge has not been come without controversy. Some have pointed out that it's a waste of water while a drought continues to ravage California; others have used it to bring awareness to the fact that many around the globe have no access to drinkable water, let alone enough excess to dump on their heads. Various injuries have also been associated with the challenge.

Amid grumblings that ALSA is hoarding some of the charitable dollars, experts have dismissed that idea. Industry watchers say ALSA is one of the more highly-rated charities when it comes to transparency and fiscal responsibility.

Naturally, other charities have sought to replicate ALSA's Ice Bucket Challenge success. (Heck, there's even a Halloween costume for it already.) In India, journalist Manju Latha Kalanidhi launched the Rice Bucket Challenge. As the name implies, it encourages people to donate a bucket of rice, or cook the rice and give it to someone in order to raise hunger awareness.

As executives at CharityNavigator.org, an industry watchdog told us, this level of giving is not sustainable. At some point, there will be the final bucket of ice poured and a last dollar attributed to this challenge. Then the ALSA and other charitable organizations will go looking and keeping hoping for the next viral giving phenomenon.

BONUS: What Is ALS and the Ice Bucket Challenge?