I have a 3.5 year old maltese that I'm having recurring potty training issues with. I never crate trained her and didn't use potty pads. When I first got her there was always someone home so we would take her out several times during the day. At times she will go for months without any accidents in the house. Now it seems every few months she goes thru a stage where she would start going to the bathroom in my apartment. I got her a crate and leave her in the crate while I am at work or out of the house. Now she has started going to the bathroom in the apt and ON FURNITURE (!?!?!) even after I've taken her outside. (she will urinate and poop and STILL goes in the apt) I've been using the crate for a few months now... so the other day we went out in the AM and she did both her business. I decided to try leaving her out while I ran to the grocery store... when I got back she had peed and pooped in the apt. Am I supposed to leave her in the crate for her whole life? (This is also a problem when we're visiting other people too)
She is a nervous dog in general but I don't understand why we go thru these phases. We're on a pretty regular schedule because I am a teacher so it's the same thing every day. It's almost as if she's never been potty trained before! I am totally aggravated and don't know what steps to take next.
EXTRA INFO
**She sleeps with me ... So sometimes when my alarm goes off in the morning if I hit snooze she will get up and go to the bathroom in the apt. I realize this is partially my fault but also part of a bigger problem.
** I don't pick up her food or water... she's never been a problem dog where she begs or scavenges for food. You could drop chicken in front of her and she will not go after it... she will slowly sniff it out giving you enough time to get it. She eats twice a day on her own... in the morning and at night... She's not overweight (6 lbs) and never gains an ounce.
**She is a nervous dog and has become increasingly territorial
Has anyone else had this problem? I definitely need some suggestions on how to handle this... It's really driving me crazy!!

