Several New York City Starbucks exposed customers to a potentially deadly pesticide, two lawsuits filed Tuesday allege.

The first claims that the coffee chain exposed customers over the last three years to Dichlorvos, or DDVP, a toxic ingredient in Hot Shot No-Pest Strips used against recommendations in Manhattan stores. In the second, a former employee and two pest control contractors say they were retaliated against for raising concerns about the use of the strips, NBC News reported.

"New Yorkers deserve to know what they are putting in their bodies and we call upon Starbucks to explain, as we allege in the complaint, its failure to take appropriate care for its customers' well-being," Douglas H. Wigdor, who filed the first complaint in New York State Supreme Court, said in a statement reported by Gothamist.

DDVP exposure can cause loss of bladder control, weakness, nausea, trouble breathing, paralysis, coma and death, the lawsuit states, according to NBC News. The Center for Disease Control and Prevention (CDC) says DDVP should only be used to control pests in enclosed spaces where people are either not present or are provided with a respirator.

Hot Shot advises that its strips should not be used in restaurants or anywhere food is served. But photos included in the suit show the strips near air vents, bagels and food preparation equipment.

"Starbucks stores throughout Manhattan have for many years been permeated with a toxic pesticide called Dichlorvos, which is highly poisonous and completely unfit for use in proximity to food, beverages and people," the suit said, as NBC News reported.

Gothamist published photos included in the suit taken by former Pest Control Technician Paul D'Auria that show the strips were being used to fight "disgusting conditions," such as a buildup of flies, cockroaches, maggots and silverfish.