The Design Go Mosqui-Go Refill's are replacement tablets for the Mosqui-go Electric. One tablet treats 20 cubic metres. Mosqui-Go Refills Pack of 30, foil wrapped One tablet treats 20 cubic metres 8-10 hours protection per tablet Approved under the control of pesticides regulations 1986 for use as directed (HSE No.8828) Contains d-allethrin 4-6% w/w