I edited this to say I should've been more specific. There's several ways to foster, they can use help in many areas. We helped out with the one that meant watch a couple puppies in between their shots.
Oh it's challenging for sure. The way I see it is we went in there and were asked to foster two out of 6. I grabbed the two needed the most help, Ganache for sure, she was way too timid and scared. Poor things.
They're both ready now! Now when the little kid or whoever comes to get a new puppy, they're gonna be "pick me!" So that's what makes the tough part of giving them back easier.
Depending on weekends, two weeks. You're just fostering between their first and second dose of vaccines and spay recovery. Then they're off.
It is tough though. I'd rather run my own rescue than temporarily borrow.