First, conduct a meticulous inspection. Focus on high-humidity zones: under the dishwasher (as you spotted), behind the refrigerator, around plumbing penetrations in the kitchen and bathroom cabinets, and inside any electrical switch boxes. This identifies harborage points and activity levels. For a serious or recurring infestation, a professional inspection using borescopes and moisture meters is highly recommended to find nests within voids that are inaccessible to you.

Second, enact strict exclusion and sanitation protocols. This is non-negotiable. Seal all potential entry points with a high-quality silicone-based caulk, paying close attention to gaps around pipes, cables, and between cabinetry and walls. Install door sweeps on all external doors. Internally, eliminate all food and water sources. Store dry goods in airtight containers, never leave pet food out overnight, and fix any dripping taps immediately. Deep clean to remove grease buildup from appliances and cabinets, as this is a prime food source.

Finally, consider targeted, professional-grade intervention. Over-the-counter sprays often just repel pests deeper into walls. Instead, use insect growth regulator (IGR) gels and baits, which disrupt the breeding cycle and are more effective for colony elimination. However, given the building’s history of treatment, the problem likely extends beyond your unit’s boundaries into common services ducts. For a comprehensive solution that addresses this and complies with Dubai Municipality’s pest control regulations, a building-wide strategy is often necessary.

If you’re seeing activity again, it’s a strong indicator the previous treatment was insufficient. For a certified assessment and a guaranteed remediation plan, it’s best to call in experts. You can reach our team for a consultation at 800-MOLDS or via email at hello@saniservice.com.