WormBoss worm control program

NSW non-seasonal rainfall

Drench groups and actives

Drench groups and actives	Worms	*Examples of brand names/comments**
BZ or benzimidazole group (‘white’)^B albendazole fenbendazole oxfendazole	barber’s pole worm, ‘scour worms’, adult liver fluke, nodule worm, aids control of intestinal tapeworm (Moniezia)	Valbazen (albendazole) WSD Fenbendazole (fenbendazole) Oxfen (oxfendazole)
LV or levamisole group (‘clear’)^B levamisole	barber’s pole worm, ‘scour worms’, nodule worm	Nilverm, Levamisole Gold
ML or macrocyclic lactone group^B (sometimes called ‘mectins’) Ivermectin abamectin moxidectin	barber’s pole worm, ‘scour worms’, nodule worm	Ivomec, Noromectin (ivermectin) Absolute, Vetmec, Paramectin (abamectin) Cydectin, Moxitak (moxidectin)
AD or amino-acetonitrile derivative group^B monepantel	barber’s pole worm, ‘scour worms’	Zolvix
SI or spiroindole group^M derquantel	barber’s pole worm, ‘scour worms’, nodule worm	Derquantel is only found in a combination: Startect (abamectin + derquantel)^B
OP or organophosphate group^M naphthalophos (NAP) (OPs have lower or variable efficacy against ‘scour worms’ in the upper GIT and immature barber’s pole worm)	barber’s pole worm, 'scour worms’	Combat, Rametin, (naphthalophos is commonly used in combinations)
TZ or benzimidazole group (flukicide)^N triclabendazole	Liver fluke (all stages); not effective against round worms	Fasinex, Tremacide, Exifluke
SA or salicylanilides/phenols group^N closantel	Liver fluke (> 9 weeks and adult) and barber’s pole worm	Closicare, Sustain
IQ or isoquinolone group^N praziquantel	Intestinal tapeworm (Moniezia)	Praziquantel^N is only available in combination with broad-spectrum drenches. First Drench^B, Genesis Tape^B

*ParaBoss does not endorse specific brands, these are presented here as examples only.

Breadth of activity across different worm species: ^BBroad-spectrum; ^MMid-spectrum; ^NNarrow-spectrum

Actives: An ‘active’ is the chemical in a drench responsible for killing worms. Some drenches have more than one active and are called ‘multi-active’ or ‘combination’ drenches.

Combination or multi-active treatments: Proprietary treatments containing more than one active. Formulated to be compatible as a mixture. Note: Do not mix your own drenches unless the labels state that you can.

Product formulation: All single actives are available as oral drenches. Moxidectin is also available in injectable products. Intra-ruminal/controlled release capsules are available with BZ and/or ML actives. Abamectin is also in a pour-on formulation for both lice and worm control.

Length of protection: Varies from short-acting (‘knock-down’ that kills susceptible worms within the animal) to mid-length (1–4 weeks) and long-acting (approx. 3 months), which not only kill susceptible worms already in the animals, but also susceptible infective larvae that the sheep eat during the protection period.

‘Scour worms’: Mainly black scour worm and (small) brown stomach worm, but also others.

Label: Check product labels for full details. Follow the label.

Other parasites: ‘Drenches’ shows effectiveness of groups against other parasites of minor importance.

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