Fleas are such a bother! But don't blame yourself for bringing them home. A flea is like any other pesty bug.....it gets into your house! Flies get in. Spiders get in. And they are both MUCH larger than a flea. Fleas sneak in through cracks, screen, windows, doors and riding on you from the yard etc.

Catching it fairly early and being on the lookout for more will be your best defense.