Lock up, or lose it.

This message from the Saskatoon Police.

The department's break and enter unit is noting a rise in thefts as the weather is prompting people to leave doors and windows open to beat the heat.

"In one case, a man rang the doorbell of a home over the lunch hour," police wrote in a news release.

"The homeowner was inside but decided not answer the door. A few rings later and the suspect was in the back yard attempting a break and enter to the residence."

The police report 56 residential burglaries last month.