Harkers Loft Treatment. Harkers Loft Treatment is a dry disinfectant in powder form especially designed for use in pigeon lofts. This Treatment is a dry disinfectant which inhibits the spread of disease-causing organisms which are often spread via the droppings.Even though the disinfectant is dry there is not lime or chalk based which can dry the natural oils on a pigeon’s plumage.The dry disinfectant is compatible with all systems and should be sprinkled lightly around nesting and perching areas – paying particular attention to any damp patches which are normally the danger areas in pigeon lofts.Loft treatment is pleasant smelling finely divided powder which incorporates a powerful ammonium biocidal agent.When spread as a dressing bacteria is held in Loft Treatment’s highly absorbent matrix and efficiently neutralised.Bacterial – effective against bacteria and oocystsPleasant to use – keeps lofts smelling freshDry disinfectant – can be used when weather is dampCompatible with all other hygiene systems – penetrates the areas your scraper cannot reach Contains Benzalkonium Chloride and Eucalyptus Oil.