I have a just turned 7 month old Terrier :)
At 5 and a half months I brought out the crate ;) until then, housetraining had been going well and she was in a puppy pen at night or if I couldn't physically watch her, but then she began climbing out and the rain started !
Skirting boards chewed, wee anywhere, chewing shoes and socks, stealing things - she did it all! in the day or so that we got rid of the pen, before the crate
every time my back was turned, she became a demon! We still had the baby gate at the kitchen too, which she could jump

Then we got the crate out :-D If I couldn't watch her - she went in it. At night time - she went in it. If we went out - she went in it ;) suddenly she discovered she could go
all night without a wee, but would whine and wake me at 6 or 7 to go out :-D and that also translated to the day time, she now asks to go out (makes a bit of fuss, no barking :-D
I had to stop taking her out as she would just play, then wee inside when we came back in
so I started leaving her out, and watching thru the windows (2 in different rooms, including jumping in and out of the bath
) and also using a tissue pad to make sure she's 'been' before she gets her treat :-D
These days she only uses the crate at night :-) when I go out she stays in the kitchen with mum (granny stays in the living room in case pup gets too wild) and is clean, last week we were delayed and she went 6 hours and was clean! I
raced thru the house to open the back door for them so they could go.
Now we just need to get her newfound ability to run off after interesting people sorted, I thought I'd lost her last week

then she discovered
she'd lost
me LOL More training methinks!
the skirting boards - I put VICKS on them and it only took one try, she jumped as if bitten :-D and has never looked at them since :-D Now I just have to stop her chewing shoes, socks she brings to me :-)
She's really into GARDEN REDESIGNING and TOPIARY, but as she's teething I just let her get on with it, I'll worry about the garden next year when she's got bored with it ;)
I've also changed her food back to JWB puppy, she was
mental on the CSJ HERBIE RINGS LOL
Hope this helps you realise, you're not alone ;)