&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.
Many flea combs made for cats and dogs are also effective. After each treatment, checking the hair and combing with a nit comb to remove nits and lice every 2â3 days may decrease the chance of selfâreinfestation. Continue to check for 2â3 weeks to be sure all lice and nits are gone.