Table 1 Corrected mortality (%) of tick larvae exposed to crude water and water with surfactant extracts (100 mg/mL) of six plant species and Amitraz (2 mL/L, ; 0.002%) (N = 4)

Maerua edulis (tuber)

97.4 ± 0.96^a

Monadenium lugardae (stems)

30.6 ± 0.96^b

Maerua edulis (leaves)

13.3 ± 3.30^c

Cissus quadrangularis (stems)

1.7 ± 2.34^d

Aloe vera (stems)

2.6 ± 3.10^d

Datura stramonium (leaves)

17.5 ± 4.84^c

Cassia abbreviata (leaves)

15.6 ± 10.16^c

Water with surfactant (negative control)

0 ± 0.87^d

Amitraz (positive control)

100^a

Water without surfactant

0^d