This product is unique in its simplicty and it actually works. It will keep flies away and it will keep your bin smelling fresh. Simply add 1 scoop (provided) in the bottom of your bin - if your bin is very unclean wash out first - add 1.5L to 2Ls of hot water (50 deg) to your bin and close the lid on your bin as the chemical reaction and fragrance released will be quite intense. Leave for five minutes to let solution cool. Then you can slosh up the sides of your bin by laying over and rotating the bin. Then simply leave in your bin and fill as usual providing your rubbish is bagged. Or prior to filling with loose rubbish consider discarding the solution.