&middotDrought damage - needles gradually turn yellowish-green and then light brown. This starts at the top of the tree and progresses downward and from the outside in. &middotAnimal injury - dog urine can cause some browning and dropping of lower branches on arborvitae and junipers.
There are many different brands of cat flea collars. Generally, flea collars work by either emitting a toxic gas to the local area (head/neck of the pet) or by exuding chemicals that are absorbed into the animal's skin. Some flea collars have an Insect Growth Regulator (IGR), to prevent development of cat fleas, eggs and larvae.
Seresto Flea and Tick Collar for Cats. 1  Breakaway flea and tick collar for cats will release from cat in the event it gets caught. 2  Includes 3 visibility reflectors for safety. 3  Innovative and effective system among flea collars for cats. 4  Provides up to 8 months of protection from fleas, ticks and larvae. 5  Completely odorless flea and tick protection.