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HOUSTON This Halloween 20 deputy constables will be visiting the homes of about 100 sex offenders in Harris County. The offenders are either on probation or parole.

The program began about 10 years ago to protect trick-or-treaters and to inform offenders of what is prohibited.

Passing out candy, hanging Halloween decorations, and even turning on a porch light are all off limits to them.

Officials are concerned some offenders could strike again.

One of the highest recidivism rates of any offender is the sex offender, Harris County Precinct 6 Constable Victor Trevino said.

Yet, some parents say they will take their own measures too.

Tracy Gomez uses a smart phone app to track where registered sex offenders live. The software even has their pictures.

Turn on your GPS or put in your zip code and it tells you the sex offenders in a 10-mile radius, Gomez said.

Daryl Kadlecek said he will get a good look at whoever hands out candy to his 6-year-old child.

We usually walk up to the door, right with the kids, he said. To make sure everything is OK.

Click here to search sex offenders in your neighborhood.

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