Credit: John McDermott
John McDermott said at least four converters were stolen from his property.
The National Insurance Crime Bureau said in 2019, an average of 282 converters were stolen a month.
In 2020, that number jumped to 1,203 per month.
While catalytic converters clean pollutants from the air, it's not the planet criminals want to save, but the trace amounts of precious metals inside.
Palladium, platinum and rhodium are what's valuable, and right now an ounce of rhodium equal to the weight of about six nickels goes for more than $27,000. The same amount of gold would be a little over $1,800.
"If they can take four to five of these in a night, they just picked up $1,500 in a night," Stallings said.