Assuming the written lease specifies that the Landlord is responsible for the pest control, then you are entitled to set-off from rent the payment for these services if the Landlord agrees. As to the water intrusion into the property, this should be the responsibility of the Landlord. Even though you have repaired some of the damage pursuant to the agreement with the Landlord and have set-off this payment from rent, it is still the Landlord's responsibility. It appears there may be a...