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Doff's Knockdown Superfast Weedkiller provides visible results in just hours. It is biodegrable and suitable for use in both warm and cool weather.
The weedkiller is very effective against moss and algae and kills a broad range of weeds including dandelion, clover, speedwell, buttercup and meadow grass.
Pelergonic acid content: 31.02 g/litre.
Size: 1 litre.