• Attack: Applying the correct treatment should be the easiest part of the solution… right? Well, this is often where many gardeners don’t read the instruction booklet carefully and often make the common mistake of doubling or tripling up on the suggested dosage. This can cause especially hormonally based weed killers to be ineffective, and others may burn surrounding plants and damage the environment. Millions of Rand are spent on trials and tests on these weed killers as well as environmental impact studies, which can take up to five years before the products are registered. Therefore, follow dosage rates and instructions accurately.