They believe someone walked through their yard around 4:30 a.m. Thursday and sprayed what they think could be weed killer on their 2-year-old son's toy slide.
"He can get sick and you'd have no idea that he's been poisoned or something," Jeff Petka said.
Surveillance video from the home appears to show someone walking through the yard, reach into their pocket and leave something on the slide.
"You think you can leave your kids toys out and they'd be safe," Kathleen Petka said.
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The family believes traces of the substance were on the suspect's feet because the footprints left behind killed the grass.
"For something to basically almost burn and kill the grass within that quick would have to be some sort of poisonous substance," Jeff Petka said.
The Petkas turned the video over to Georgia police, who are now investigating. They hope the video will lead to an arrest.
"Luckily we caught it in time and I just want to stop whoever did this and make sure it doesn't happen to anybody else," Jeff Petka said.
The family said they now bring their child's toys inside at night.
Neighbors are sharing the information on social media and taking steps to stay vigilant.
"Our next door neighbors bought cameras, but they just haven't installed them, so they're going to install their cameras," Kathleen Petka said.
The Petkas said as far as they know, no one else in the neighborhood reported anything similar and they believe it was a random act.
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