Insecticide ear tags?

I have seen some kennels using insecticide ear tags for cattle. they take the tag and attatch it to the inside of the collar to make constant contact with the dog. they say it works for all insects including mosquitos.

Any of You doggers ever hear of doing so and with what results?

 

A lil off-topic, but I came across these:

Home | shoo!TAGâ„¢ - The chemical-free way to protect your dogs, cats, and horses from pests

"shoo!TAG™ combines cutting-edge science and technology to produce a “green” product that emits electromagnetic frequencies to keep pests away, eliminating the need to use toxic chemicals on your animals."

 

They are good for keeping those ear biting flies away, very effective.

 

Interesting.. Really concerned about the skeeters though those look like they would work pretty good for the flies.

 

If we just had 1 or 2 dogs this product woult be awesome!!! we have 11 bulldogs and 5 cats. my husband has an applicaters liscence so we can order bulk chemicals but was wondering about the ear tags.

 

ive heard of people using the ear tags but i dont know which particular ones, how effective they are, and how safe id like to know to though.

 

I'd like to know more about this applicator license and what you have to do to get one.