The camp was liquidated and its workers executed at Ponary on 3 July 1944, just ten days before Red Army captured the city.

[5] Its director took measures to protect factory workers who were mostly Jewish from the atrocities committed in the Vilna Ghetto and Ponary massacre.

For example, on 9 September, the director successfully petitioned the German administration to dedicate four houses within the ghetto to workers of Kailis.

[c] The move was arranged by Oscar Glik, an Austrian Jew who managed to obtain Volksdeutsche papers and later, in effect, became director of the factory.

[d][5] It was a relatively safe place; the workers were one of the first to receive work permits (known as yellow Schein) that protected them from Aktions – round ups for executions at Ponary.

According to Abraham Sutzkever, it was a sabotage action by Fareinigte Partizaner Organizacje (FPO), but Isaak Kowalski stated that it was an accident.

[5] In August–September 1943, Vilna Ghetto was liquidated and only the Kailis and HKP 562 forced labor camps and two other small groups[e] remained in the city.

The Black Book published a testimony that the children were taken to Kraków where they were used as blood and skin donors for injured German soldiers.