Hi! Congratulations to both you and Maynard on his adoption!!!
The first thing I was going to mention is to defintiely have a urinary tract infection ruled out. This is so important. You might also ask your vet to place him on antibiotics for a UTI even if the tests comes up negative, or you could have them repeat the test with another sample since a false negative may be possible.
Even if the housebreaking includes going poop as well, it could still be the urinary tract infection since eliminating is eliminating,do you know what I mean? It's just going to happen with #2 as well, it's just kind of what very often occurs.
The importance of this is 1st for the sake of getting it treated,but also if it's something the dog cannot actually prevent due to frequency and urgency - the key symptoms, along with a darker urine.
The other thing that was mentioned in the posts and is very good, is to use a special cleaner, like the Miracle cleaner sold at pet stores.
The crate, well I would think it could possibly cause anxiety. Do you know about crate training - training to make the crate a place he looks forward to?
I'm iffy about using the crate, it depends, but only you know the vibe you're getting from him. Either way, there are things you can do to help recondition Maynard to seeing the crate as a good place.
The other thing I want to mention and that I did with my first greyhound, was use words to match what he was doing, so actually as he was going potty I'd say "makin' a pooty,go pooty" while he was going..... and then "Good Boy!!!
And then after he finished and a great and happy praise for a job well done, *Back In the apartment We'd Go*! Happy!
I feel this is an important part of housebreaking training, that being, to go back in quite soon after. It's the last memory the dog has as to being outside, the pottying and praise; the perception and most recent event of a great mission accomplished.
Hopefully I was somewhat clear anyway!
YYAAAAYY for Maynard on his loving forever home!