I'm sorry you've had so much trouble with a very nasty red mite infestation. I hope you find ways to combat this nasty after all. In nothing helps you need to consider to quit having birds for a longer period. But maybe .....
I looked for some info on the internet on red mites that might help and combined it with what I know. But I don't now where you live, this can be important. Because in Europe we have a different approach and I am not sure if you can buy the same stuf that is sold here.
Red mites on people and pets
What about red mites on people and/or pets? If poultry is heavily infected by red mites, people or pets that enter the coop can also become infected. The infected people are bitten and therefore experience itching. The bite of the red mite causes a rash with red, very itchy papules at the site of the bite. The itching is the effect of an allergic reaction to the components of the red louse's saliva.
Red mites can temporarily feed on human blood, but then they cannot reproduce. Focus control on the place where the red mites come from and reproduce. Make sure you don't bring them into your house.
Stratiolaelaps scimitus /predatory mites
There is one method you probably didn't try. It's a natural enemy that kills/eats red mites. In the Netherlands you can order these online. You need to know it's not possible to eliminate the red mites completely with these predatory mites.
The predatory mite Stratiolaelaps scimitus is also known under the scientific name Hypoaspis miles. It is a soil-dwelling predatory mite occurring naturally in several parts of the world. This predatory mite controls larvae of sciarid flies (fungus gnats), thrips pupae and other soil-dwelling insects.
Red mites hide during the day in poultry nesting material and in cracks or cracks in a stable or cage and lay eggs there.
Red mites can be effectively combated naturally and without damage to the environment with Stratiolaelaps scimitus until it gets cold/starts to freeze. Humans and other mammals or poultry are avoided by this predatory mite. The predatory mite seeks out the red mite in the smallest nooks and crannies. The effect and progress of the control can be monitored with red mite traps. Do not use any DE or poisons if you use these predatory mites, because they will die too.
During the winter period the red mite can't survive in a coop in winter cold (not heated coop). They freeze too soon after the predatory mite die. But unfortunately the eggs will survive. And next spring you get a new infestation if you do nothing. You need to build a new coop and transfer the chickens during the winter period or do a thorough deep cleaning and use DE (paint) on all surfaces before the temps rise. Use not bedding where you don't need it. And change the bedding weekly. Keep monitoring and if the DE faints, apply again.
Other ways
Some people don't try to eliminate the red mite but buy new predatory mites every spring to control them.
Some people buy plastic coops that can be washed weekly during the summer period.
For further advice you need to be as precise as possible in what circumstance you keep your chickens.
I looked for some info on the internet on red mites that might help and combined it with what I know. But I don't now where you live, this can be important. Because in Europe we have a different approach and I am not sure if you can buy the same stuf that is sold here.
Red mites on people and pets
What about red mites on people and/or pets? If poultry is heavily infected by red mites, people or pets that enter the coop can also become infected. The infected people are bitten and therefore experience itching. The bite of the red mite causes a rash with red, very itchy papules at the site of the bite. The itching is the effect of an allergic reaction to the components of the red louse's saliva.
Red mites can temporarily feed on human blood, but then they cannot reproduce. Focus control on the place where the red mites come from and reproduce. Make sure you don't bring them into your house.
Stratiolaelaps scimitus /predatory mites
There is one method you probably didn't try. It's a natural enemy that kills/eats red mites. In the Netherlands you can order these online. You need to know it's not possible to eliminate the red mites completely with these predatory mites.
The predatory mite Stratiolaelaps scimitus is also known under the scientific name Hypoaspis miles. It is a soil-dwelling predatory mite occurring naturally in several parts of the world. This predatory mite controls larvae of sciarid flies (fungus gnats), thrips pupae and other soil-dwelling insects.
Red mites hide during the day in poultry nesting material and in cracks or cracks in a stable or cage and lay eggs there.
Red mites can be effectively combated naturally and without damage to the environment with Stratiolaelaps scimitus until it gets cold/starts to freeze. Humans and other mammals or poultry are avoided by this predatory mite. The predatory mite seeks out the red mite in the smallest nooks and crannies. The effect and progress of the control can be monitored with red mite traps. Do not use any DE or poisons if you use these predatory mites, because they will die too.
During the winter period the red mite can't survive in a coop in winter cold (not heated coop). They freeze too soon after the predatory mite die. But unfortunately the eggs will survive. And next spring you get a new infestation if you do nothing. You need to build a new coop and transfer the chickens during the winter period or do a thorough deep cleaning and use DE (paint) on all surfaces before the temps rise. Use not bedding where you don't need it. And change the bedding weekly. Keep monitoring and if the DE faints, apply again.
Other ways
Some people don't try to eliminate the red mite but buy new predatory mites every spring to control them.
Some people buy plastic coops that can be washed weekly during the summer period.
For further advice you need to be as precise as possible in what circumstance you keep your chickens.
