SPOKANE, Wash. -

A South Hill couple slept soundly inside their home overnight Monday while someone snuck into their home and burglarized it.

This is a cautionary tale about leaving your doors open or unlocked during the summer. While it's hot, and it might be tempting to leave a window or door open to help cool down your home, the Spokane County Sheriff's Office is warning people to be extremely cautious so you can avoid becoming a property crime victim.

The other night Craig Grass and his wife were sound asleep in their home near the intersection of Hogan and 56th when someone came inside and started stealing things like his wife's watch and his wallet, with credit cards and $300 in cash inside.

“All the windows were locked, the front door was locked and because of my garden out back i forgot to lock the patio door,” Grass said.

The warm weather has many people leaving doors unlocked and windows open but the sheriff's office is warning you to lock up before you go to bed.

“It's very unfortunate we have to take those steps at our own house when we just trying to be comfortable but the reality of it is these folks are going to take advantage of you as you are airing out your house while you are asleep,” Spokane County Sheriff's Deputy Craig Chamberlin said.

Chamberlin called the breakin at Grass's home extremely alarming because he lives in a nice, quite neighborhood that's gated at night.

“It's pretty scary,” Grass said. “I'm a person who exercises my Second Amendment rights, it could have turned violent and turned real fast.”

Grass might have lost a few things but most importantly, he lost his sense of security, so now he's taking action so this doesn't happen again.

“We are looking at changing the locks, installing door jams and security cameras,” he said.

The suspect was caught on surveillance video using the couple's credit card the next morning and detectives hope to use that video to track the person down.