is there a trick to get rid of crickets?

Seal up where they get in first. Door sweeps, gaps round pipes and cables, cracks along the bottom of the walls. They come in for warmth and damp. Outside lights pull them towards the house at night, so switch them off or swap to yellow bulbs. Inside, sticky traps along the skirting near where you hear the chirping catch a surprising number, and a dehumidifier helps if it's a basement, they love damp.