&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.
The Seresto Flea Collar for Dogs is easy to use. All you do is remove the collar from the bag and place it around the dogâs neck. Adjust the tightness of the collar until two fingers can be inserted under the band. Snip off any excess collar that may stick out beyond the end of the clip.