Domestic lizards may be helping to kill insects at home. This can certainly be helpful to some but not for many people like us who are having disgusting experience to see them leaving behind droppings on the floor and eggs in the cupboard.
The trouble with the droppings is that although they are small, they leave behind an offensive odor, along with the possibility of someone stepping on them.
Apart from that, they also become unpleasant when we accidentally squash or break their eggs.
For the weak hearted, the weird detachable tail of theirs when cut off by any chance, leaves behind an awful image that makes you want to get rid of them from your home.