I was not given the residence one to take home... but I'd bought a bunch of disposable douches anyway. I didn't want to mess around with refilling them and making more vinegar solution and whatnot when I was already up to my eyeballs in other aftercare issues, and I didn't regret it. 🙂
I think the plain vinegar douches at Target were less than $2 for a 2-pack, so under $30 for a 2-month supply. Well worth it.