Understanding the CRU
The Cylinder Refill Unit (CRU) serves as the "ammo" for your Skeeter Defeater™ Dispenser, and is sold separately. It contains pyrethrin, a botanical insecticide that kills mosquitoes on contact. The CRU is designed to work exclusively with the Skeeter Defeater Dispenser; no other insecticide containers will fit into the Spray Head of the Skeeter Defeater and work properly. The CRU comes with a spray button and can be used apart from the Dispenser to spray outdoor areas by hand. It is necessary to remove this spray button before inserting the CRU into the Dispenser.
Replacing the CRU
The CRU will last for approximately 66 sprays when used with the Dispenser. If you spray the Dispenser twice a day (dusk and dawn), the CRU will last 33 days. The Indicator Light will blink once every four seconds once the unit has been sprayed 54 times to notify you of the upcoming need for a replacement CRU. You can purchase additional CRUs where you purchased your Dispenser, at various retail outlets and online at SkeeterDefeater.com.
The Spray Sequence
Once the batteries and CRU are installed, and the power setting is chosen, place your Skeeter Defeater Dispenser appropriately in your yard for maximum effectiveness.
When you initiate the spray sequence (either via Remote Control or DUSK/DAWN Sensor), the Indicator Light will blink increasingly faster for six seconds. The Nozzle will then spray the insecticide from the Dispenser for four seconds, and the Indicator Light will remain lit during this time. You will see the spray in the air for a short period before it disappears from site. Rest assured that the pyrethrin insecticide is still working and spreading throughout your yard (even behind the Dispenser) up to 300 square feet even though you can't see it.