TAMAQUA, Pa. -

Dozens of people in Schuylkill County are outraged, after police said their cars were damaged by some sort of substance that's ruining paint.

Over the last month, Tamaqua police said more than 20 cars were vandalized in three separate incidents.

The most recent attack came over the weekend.

Multiple cars in the 200 and 300 blocks of West Rowe Street were sprayed with an unknown substance.

The substance is causing the car paint to bubble.

Kelly McGlinchey said her and her husband's cars were damaged.

"When you try to wipe it off it's like an oil and the paint comes right off," McGlinchey said.

Residents said the damage is a major setback.

"It's devastating. We are basically going to have to have our cars painted from top to bottom, all of us," McGlinchey said.

Police currently do not have descriptions of the vandals.

McGlinchey and others hope they'll be caught soon.

"I would like to teach them the manners, or go back and study or something," said Todd Peerla.

"A bunch of us are talking about getting security cameras to catch them in the act," McGlinchey said.

Anyone with information should call police.