We have the odd outbreak of annoying pests in our house that disrupts the peace and tranquillity of our Rainforest/Desert...
By far the most terrible one we have to deal with is whitefly, which keep reappearing in plague proportions (and has lead to some mass plant culls in the past); as soon as we see these blighters these days out comes the bug spray... A couple of weekly treatments in a row seems to calm the outbreak.
Red spider mite
The balcony gets quite hot and dry - ideal conditions for red spider mite, which we have a bit of an outbreak of at the moment. Currently trying Ludwig's Rose Spider Mite (Etoxazole) as a method of control.
I've seen both blackfly and greenfly on the balcony; a quick round of Efekto's Garden Gun sees them off quite quickly.
If anyone knows of a source of biological control agents in South Africa for Whitefly and Red Spider Mite, I'm keen to get some!