Kitchen (7 points)
The kitchen carries most of the harbourage in a domestic infestation because it combines heat, moisture and food residue.
- Inside the top corner of every wall cupboard.
- Both hinge recesses of under-sink units.
- Behind and beneath the fridge and freezer motor housing.
- Void behind the kickboard, dotted every 30 cm.
- The gap between the cooker and its cabinet run.
- Pipework entries under the sink and behind the dishwasher.
- The top edge of skirting boards, not the floor line.
Bathroom and utility (3 points)
Damp voids sustain populations even when the kitchen has been treated.
- Behind the toilet cistern and around the soil pipe collar.
- Under the bath panel at the pipe run.
- Behind the washing machine and around the waste trap.
Entry and transit (2 points)
Intercept re-introduction from communal areas, bin stores and drains.
Everything below assumes a professional-strength bait — our cockroach gel kits ship with the applicator and placement map referenced here.
- Door thresholds, airbricks and vent surrounds.
- Meter cupboards, riser voids and boiler cupboards.
Dosage and spacing
Use pea-sized dots of roughly 0.25 g, spaced every 30 cm along a run. Twenty to thirty dots covers a standard kitchen round. Reapply consumed dots within 48 hours during the first week, then check weekly.
Common mistakes
Large blobs on open surfaces dry out and get cleaned away; small dots inside voids stay palatable. Never spray insecticide over or near a bait point, and never place bait where a pet or child can reach it.