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Many automatic dispensers are battery-powered — commonly using two AA alkaline batteries — and let you choose timed spray intervals such as every 9, 18, or 36 minutes. Replace batteries by opening the unit following the product directions.

Duration varies by product, device setting, and frequency of use. Example durations shown in product listings include about 70 days, 60 days, 50 days, and roughly 1 month. Check the specific product label for the expected run time at the setting you plan to use.

Common warnings include contents under pressure, flammability, and eye irritant notices. Product labels typically advise avoiding exposure to heat and not puncturing containers, and they instruct you to keep products out of reach of children and pets. Always follow the product label for full safety and handling instructions.

Automatic dispensers commonly offer timed spray intervals (for example, every 9, 18, or 36 minutes) and some include a boost button for an instant burst. Plug-in units often provide multiple scent intensity settings and a boost function that increases scent for a set time.

Power options include battery-powered dispensers (many use two AA batteries), non-powered manual spray bottles, and electric plug-in units. User controls often include timed release settings (examples: 9, 18, or 36 minutes) and a boost/instant-burst button on some automatic holders.