Avigail and Yael Gross, z"l
Avigail and Yael Gross, z"lCourtesy of the Gross family

The Gross family - which in January 2014 tragically lost two infant daughters to poisoning caused by a pest control professional - on Thursday launched a lawsuit worth millions against a number of sources they accuse of negligence leading to the death of the infant girls.

The entire family was poisoned after an exterminator left a highly toxic material, phosphine, in the enclosed security room of their apartment in Jerusalem's Givat Mordechai neighborhood. The young daughters Yael (2) and Avigail (4) did not pull through the effects of the lethal poison, whose toxicity was at the highest levels of the spectrum.

Now the family is leveling a suit worth 11.6 million shekels (over $3 million) against the exterminator, the company that provided the pesticide, the clinic and doctor that initially treated the girls and sent them home undiagnosed, and several governmental ministries under whose responsibility handling the lethal poison falls, reports Channel 2.

According to the family's attorney, every one of the sources could have prevented the tragic death of Avigail and Yael.

The suit charges negligence, as well as criminal negligence against several of those being sued.

The attorney said the exterminator and the company that imports the pesticide knew how dangerous it was and didn't do anything to prevent the poisoning.

Likewise the attorney said the clinic and the doctor were negligent for not conducting the elementary examinations required after the girls initially felt unwell, and sent them home to take pain killers instead of diagnosing the poisoning.

In the incident the parents, Shimon and Michal, were also poisoned but were able to overcome it, as did their two sonsHaim Michael Shlomo (8) and Rephael Yitzhak Isaac (6) eventually.

This January a third baby boy was born to the family, a year after the tragic death of the two girls.