Antiparasitic collar that has a long-term effect against fleas, ticks and mosquitoes . Max Biocide Dog Collar Dog collar 38 cm is suitable for smaller breeds . It works on the basis of margosa plant extract - a substance from the tropical Indian zederach tree, which has repellent and biocidal effects . The popularity of this substance is growing because it is also suitable for animals that are sensitive to chemical repellents and can be used by puppies from 2 months of age. The effect of the collar is evident as early as 3 hours after application. It is waterproof and protects the animal for at least 4 months . The collar does not leave a chemical trace in nature. Resistance does not develop on Max Biocide antiparasitic products and collars.