Tenants roach infestation

[Campbell Agyei]

The tenant on the second unit of my rental property complained about roaches in her apartment. I got an exterminator to come see and solve the problem the other 2 units and the basement showed no signs of roaches or any pest at all but it was only the second unit anyway the exterminator still sprayed her unit and the whole house. After some months now the same tenant is complaining about roaches again is it my responsibility to pay for an exterminator the second time?