The most common flea encountered indoors is the cat flea. It doesn't particularly like feeding on humans but does try us out by biting in a number of places, often biting in a line along the waist where there is close body contact with clothes.
Mosquitoes breed in stagnant water.
The female mosquito requires a blood meal in order to have enough protein to lay eggs. Mosquitoes can carry various diseases, the most virulent in Africa being malaria which kills over 1.5 million people in Africa annually, most of them children. Fortunately, malaria does not occur in the Western Cape but nevertheless mosquitoes can be very troublesome and cause nights of bad sleep. These can be purchased from camping shops. Be careful not to overuse such products, as even the least harmful ones might affect you in unexpected ways.