Sprays and coils work, but they fill the room with smoke and residue — not ideal around children or anyone with asthma.
A rechargeable bat handles the mosquitoes already indoors without any of that. Look for a three-layer safety mesh so fingers cannot reach the charged grid, and a battery that holds its charge for a couple of weeks between charges.
Pair it with basic prevention: no standing water around the house, and mesh on the windows during dusk when mosquitoes are most active.