Between doses

One, three, six or twelve

Four boxes, one identical dose inside each — the only real variable is how much future you'd like to buy at once. Match the count to the calendar you genuinely keep, not the one you aspire to.

One dose is the audition. A new cat, a wary foster, a household that wants to watch the six-hour knockdown happen before committing — this is the box that answers the question for fifteen dollars and change.

Three and six are rhythm boxes. Three doses cover a textbook flea season, first open window to first frost; six stretch across the entire warm half of the year with a single winter reorder. If your cupboard already holds a flea comb and an opinion, start here.

Twelve is for the households where the first of the month is already a ritual — coffee, calendar, cat. Per-dose economics usually improve as the box gets bigger, but the seller sets the prices and they drift, so glance at the per-dose math at checkout before declaring victory. Whatever the count, the beat never changes: one drop, every month, at the nape.