Short answer
When insecticides are used indoors, their smell and chemicals stay in the home. Preventive methods are usually enough.
Methods
- Physical barrier: Gap-free insect screens or window filters on windows and doors.
- No more standing water: Plant pot saucers, buckets and puddles on the balcony.
- Rubbish management: Lidded bins, emptied regularly.
- Light: Avoid bright lights indoors while the window is open.
Made to measure: hook-and-loop or roll

