The leader of the council says his administration will work with unions in future to avoid any potential impact on services from strikes.
Councillor David Perry's comments come after Tory group leader Cllr Susan Hall said Harrow Borough Council bins would be left to fester in the streets for weeks because of the industrial action.
Cllr Perry said: “Recognised unions held an official ballot for industrial action, as a result their members voted for industrial action.
“The administration understands that this action has an effect on some council services. In future when there are local disputes the Labour group are committed to work with relevant unions to avoid potential impact on services.
“In the eight months of Susan Hall’s Conservative administration she spent most of this time attacking the hard-working staff at the council.
“Now in opposition her negative criticism of council staff continues.”