To briefly respond to this issue, we would like to cite Dr. Ahmad Shleibak, who said:
We as Muslim have to boycott the Israeli products. As you said they use our money to kill our Muslims brother and sisters. Allah (swt) said: “Help you one another in Al-Birr and the At-Taqwa (virtue, righteousness and piety), but do not help one another in sin and transgression” (ِAl-Ma’idah, Q5:2)