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I want to find out which mouthwash killsbacteria most I want to know because there aremany mouthwashes and I dont know which sanitizes muchHypothesisListerine will kill bacteria the bestbecause it has been proven variously Materials28 petri dishes28 cotton swabs7water samples7 Listerinesamples7Scope samples7Crestsamples2 tbsps of agar BoilerMarker TapeProcedureMix 2 tbsps of agar with 4 cups of water in boiler with heat and stir until thick Pour until half of petri dish Place in refrigerator upside down for 24 hoursGet seven people Wait two hours after they eaten and rinse mouths with waterSwab back oftongue and wipe it on the dish then label it as A A1 etc next seal with tape and place in a safe placeRinse with another mouthwash of choiceRepeat step 3 and 4 at with different mouthwashes at different timesTakepictures record results and draw a conclusion from dataGraphResultsMouthwashes like Listerine and Scope sanitize better because they have alcohol while water and Crest sanitized the worst because they did notPossible ErrorsErrors were thedelaying of the agar for dishes and of test subjects that took timeOther ExperimentsI canadd different mouthwashes and people for the next time I use it again next timeConclusionListerine sanitized the best because contained alcohol Scope contained alcohol too but not as well as Listerine Crest did horrible because it had no alcoholAcknowledgementsThank you for the peoplewho helped me for the experiment and my dad who helped me with supplies and time management Bibliography httpwwwallsciencefairprojectscomsciencefairprojects132985ff2deb228a82851a3452c3d480d456ddhtmlhttpezinearticlescomBad-Breath---Which-Type-of-Mouthwash-Kills-Bacteria-Most-Effectivelyid933478httpwww1800dentistcomdental-encyclopediamouthwashBacteria and Viruses by Thomas PeggyWhere the Germs Are A Scientific Safari by Bakalar NickAPPENDIXData TableDay 11031Day 6116Day 7117Day 8118Day 9119Day 101110Dish AXXX2d3d 3dDish A1XXXXXXDish A2XxX2d1c 1c Dish A3XXXXXXDish BXX4d4d4d4d Dish B1XXX1c1c2cDish B2XX3c3c3c3cDish B3XXXXX4dDish CXXX2d3d5d Dish C1XX1c1c1c2cDish C2XXXXXXDish C3XX1d1d1d3dDish DXX2d4d5d6dDish D1XXXXXXDish D2XX1d1d1d2dDish D3XX1d1dc1c1cDish EXX1d1dc1dc1dcDish E1XXX1c1c1cDish E2XX1d1c1c1cDish E3XXXXX5dDish FXX1d1c1c4cDish F1X1d1d1c1c1cDish F2XxXXXXDish F3XXXXXXDish GX1d2d2c2cXDish G1XX1d1c2c2c Dish G2XXXX1c1cDish G3XXXXXX X no growth d dot c cluster
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