When it comes to bug treatment, the pros at your Panda Pest Control recommend sealing up entry points before you ever reach for a spray. Bugs aren't coming through the front door — they slip in through the gaps you've stopped noticing: daylight under exterior doors, holes around pipes under the sink, and cracks along windows and the foundation. A cheap door sweep, some copper mesh, and a bead of caulk shut those down. Spray kills what's already inside, but sealing cuts off the supply line — and that's the whole game.