How long does it take for ivermectin to work?

Mites are a difficult task to remove. For the scratching, there is 2 issues, one is that there are still mites/lice and will continue to scratch untill they are gone. Issue #2 is that the piggy now has OCD, and you will need to break it. This is a very tedious task, and is annoying to the owned. You must disipline and continue to observe the piggy, to get them to stop. After a few weeks, the issue should be dissolving, and it should start to heal. If not, you make need to make a "coat" this is a cover, normally sold or infomation for getting one given by a vet. You make have to make one, if there are none in your local area. This will allow you to help your animal, without have to spend hours upon hours, breaking their OCD. As for the wood hutch, as your vet the species of mite/lice it is, and find the extremes that the mite can survive, you make be able to kill them by freezing or heating the hutch ( as wood can be cooked up to 400 degress without combustion as long as there is no flame. ) Do not allow it to get over 450 degress as there is a potential for spontainious combustion as that point.