Share. Flea and tick collars vary in their active ingredient. Often, these collars contain amitraz (a chemical that is an alpha2-adrenergic agonist and monoamine oxidase inhibitor), organophosphates or carbamates, or pyrethrins/pyrethroids. Please see each individual active ingredient for more information.
The mean minimum temperature for May 2012 at Adelaide (Kent Town) was 9.3 C, 0.9 C below the long term May average of 10.2 C. This resulted in the coolest May since 2006. By comparison, May 2011 saw minimum temperature for the month average 10.0 C.
Average Temperatures in Johannesburg, South Africa. 1  The annual mean temperature in Johannesburg, South Africa is very mild at 16.2 degrees Celsius (61.2 degrees Fahrenheit).2  The variation of average monthly temperatures is 10 C (18 F) which is a low range. The hottest month (January) is warm having a mean temperature of 20.5 degrees Celsius (68.9 degrees Fahrenheit). 2  June is the coolest month (quite mild) with a mean temperature of 10.5 degrees Celsius (50.9 degrees Fahrenheit).