Fall has officially begun…and not just because today (September 22) is the autumnal equinox.

It’s the first day for sales of Baker’s Drive-Thru’s Safe Halloween coupon books!

Now in its 27th year, the campaign has raised nearly $4 million for Easterseals Southern California.

The coupon books are still just $1, but contain more than $428 in value with free and discounted deals from Baker’s, along with other businesses including Aquarium of the Pacific, Catalina Express, Fiesta Village, Krispy Kreme, My Delight Cupcakery, Scandia Amusement Park and Sky Zone.

A full 100% of sales benefit local Easterseals — apparently now one word — services.

The coupons are available at all Baker’s Drive-Thru restaurants through midnight on Halloween, while supplies last.