Butox^® Swish Questions and Answers

There is no specific drying time for Butox Swish and the dry time will be dependable on several factors such as coat conditions (wet, dry, damp, dirty) and weather (sunny, dry, humid, cold).

MSD Animal Health has undertaken a field study¹ to see how the efficacy of Butox Swish might be affected by rainfall. A group of treated animals were wetted thoroughly with water, twice weekly, over a 4-week period. Midges were then placed in contact with the hair from these animals. Even after 4 weeks of rainfall the midges were still killed, even with as little as 15 seconds exposure to treated hair.

The study confirms that Butox Swish remains effective on animals regularly exposed to rain - not an uncommon event during the UK summer!

The best time of year for beginning Butox Swish application is early in the grazing season before fly egg and larvae begin to develop. 

Control of biting and nuisance flies of cattle, including Haematobia irritans, Hippobosca equina, Stomoxys calcitrans, Musca autumnalis and Musca domestica.

Control of biting and sucking lice of cattle, including Damalinia bovis, Haematopinus eurysternus and Linognathus vituli.

Butox Swish is not a repellent product.

It works by killing the flies or lice on contact with or ingestion of the product.

Pour on the product along the backline of the animals, from the head to the tail, at the recommended dose rate.

There is a Butox Swish applicator available for purchasing as a separate item. It is a T Bar applicator with jets to expel the product.