Good morning lpvites I have a little tips showing why wall gecko keeps showing up in some houses and how to prevent it 

The story of wall gecko been harmful or harmless is a controversial one base on wat people believe. 

This anodyne animal is always found in some homes, however many believe this reptilia is never a threat to mankind and even called him 'House keeper' of which he's also helping us by eating bugs so killing him is absolutely unfair while others believe that wall gecko is a sign of evil. Don't forget he's also created by God, do the folllowing to send him exile without hurting him

THE USE OF GARLIC

If you  see any wall gecko just slice garlic into pieces and drop it at the point you seeing him and he will never come to your house again as well gecko hate the smell of it

DEJUNK YOUR HOUSE

Clear out all unnecessary luggages from your house it gives them a conductive atmosphere to live in

INSECT FUMIGATION

Look for any means necessary and kill all the insects in your house with a fumigator, as well gecko feeds on insects so if there's no insects that means wall gecko won't come again

SEAL ALL OPENINGS

Make sure that you don't have openings in your house because wall gecko is capable of entering your home no matter how small the space is not even your sliding windows can keep him away. 

EGG SHELLS

Break the egg and leave shells at position where the gecko is been seeing this one is really effective because wall gecko has abnormal fear about egg shells.