Beesource Beekeeping Forums banner

1 - 8 of 8 Posts

·
Registered
Joined
·
4,646 Posts
Discussion Starter #1
How about using bleach to sanitized boxes and bottom boards? Is it safe? What percent would you mix?
Always though bleach kills everything. I read that it can be added to syrup to residues mold.

Will it kill EFB, nosema...

I realized it will most like wreck the comb. So I wouldn't use it on that.
 

·
Registered
Joined
·
2,909 Posts
A study done in Canada several years ago said that scraping and pressure washing a box removed as many spores of AFB as did scorching. Strong bleach will kill AFB spores but the spores in wax is hard for the bleach to contact (a NZ study). The bleach needs to be in contact for 10 to 20 minutes.
 

·
Registered
Joined
·
693 Posts
There's a video by FatBeeMan soaking his frames in strong bleach; he's been doing it for years. You need to search for it on YouTube.
 

·
Registered
Joined
·
590 Posts
A study done in Canada several years ago said that scraping and pressure washing ay box removed as many spores of AFB as did scorching. Strong bleach will kill AFB spores but the spores in wax is hard for the bleach to contact (a NZ study). The bleach needs to be in contact for 10 to 20 minutes.
Do you have references for this statement bleach kills AFB ??
If so can you post it here ??


BEE HAPPY Jim 134 :)
 

·
Registered
Joined
·
2,909 Posts
"Elimination of American Foulbrood Without the use of Drugs, A Practical Manual for Beekeepers" by Mark Goodwin and Cliff Van Eaton. This book was printed in 1999 by the National Beekeepers Association of New Zealand. Goodwin was a research scientist with the Horticulture and Food Research Institute of New Zealand, stationed at the Ruakura Agriculture Center. Van Eaton was a professional apiculturalist. He was the manager for the American Foulbrood Control Program from 1991 to 1998.

Page 45, "Research conducted at Ruakura has shown that concentrations of 0.5% sodium hypochlorite in water will kill all AFB spores in 20 minutes." It goes on to warn that the bleach will only kill what it comes into contact with, so any material to be sterilized needs to be clean before treatment. It also warns about what bleach does to leather, cloth and some plastics and metal and recommends a small trial rum on the materials.

It does not say what using a stronger concentration would do in a shorter time. At one time the booklet was on the NZ Government website.
 

·
Registered
Joined
·
4,646 Posts
Discussion Starter #8
>Could the bleach weaken the glue used on frames if soaked to long.
I am sure it could, even soaking in water too long will weaken even water proof glue used on wood. 20 min should be fine.

>"concentrations of 0.5% sodium hypochlorite in water will kill all AFB spores in 20 minutes"
Wow that strong stuff. And it cheap too.

Fat bee man used one cup in 1/2 of a five gallon bucket that works out to about 4%.
 
1 - 8 of 8 Posts
Top