You will need to have it striped to apply borate. To strip, borate treat, and stain a 1,500 sq ft house would cost $14,000 +/- a thousand. Also, plan on budgeting about $1.50 per sq ft of living space/per year to keep it professionally maintained.
It is call Resin Bleed and there is really no way to stop it. you can scrap it off, but the next time the sun hits the wall it will bleed out again.
No. Do not use bleach. Call Timeless Wood Care Products to get proper materials. 800-564-2987
Sounds like you had a plant oil based stain, ( linseed, sunflower, safflower) which causes this with proper weather conditions
You really need to remove the Sikkens or it will continue to peel and take the new stain with it. Sherwin Williams Woodscapes can make a black stain for you.
You may have to have them pulled out then re-set and re-caulking them properly.
First, DO NOT fill the checks (cracks) in the logs unless they are letting wind, water or bugs to get inside. Call Dave at 800-564-2987 for more guidance and help. He also has everything you will need to do the project.
I would recommend stripping it and applying a good quality latex stain made for log homes. Call Dave at 800-564-2987 for help and products.
Carpenter Bees normally will not compromise the logs. They are very hard to control and are more of a nuisance. An exterminator from the area would be able to help.
It probably can, but I would be afraid of it warping