lambda-cyhalothrin: Make sure you keep it away from certain areas of your body too, Dave. We don't want you itching in all the wrong places
Other Toxicity Information
In humans, contact with exposed skin may result in temporary itching, tingling, burning or numbness, called paresthesia.
The effect may result from splash, aerosol, or hot vapor contact, or transfer to the face from contaminated gloves and hands. The symptoms normally disappear within 24 hours. Face and genital areasare especially susceptible to this effect.
Tony Roberts
Treasurer, Haworthia Society
Chairman, Tephrocactus Study Group
Moderator, BCSS Forum
Kent
(Gasteria, Mammillaria, small Opuntia, Cleistocactus and Sempervivum are my current special interests)
fruit wrote:
If the lavender oil mentioned is the typically available oil that may be used as a few drops on water heated in some contraption with a tea-light then I am sure I have come across mentions that just the diffused vapour may be particularly toxic to some household pets (liver damage).
There are certainly cautions against human skin contact with the concentrated product, probably no wonder that mealies don't like it much
It is for those that you put the reeds into so that the vapour soaks up the sticks and makes the room smell nice.
DaveW wrote:Just been to the local garden centre to get some insecticide. Bought some Westland Resolva Bug Killer concentrate, since ready mixed chemicals are a bit of a rip off I find as they seem to charge for the diluting water at the same price as the chemical. It says on the packet "Dangerous for the Environment", "Dangerous to Bees" contains 0.75 g/l lambda-cyhalothrin. Resolva Bug Killer Concentrate also gives reduction in the numbers of mealybugs.
Evidently it is approved for use in the EU yet kills bees, so a bit pointless the EU banning other pesticides for the same reason?
I think I tried that one last year, I dont have any left to check but if it is the one I am thinking of I was not impressed, my experiance was that it may or may not reduce the numbers of mealybugs.
You can still get the old formula Pravdo Ultimate on Amazon, it is expensive and from a batch dated 2015, as I am not sure how long the shelf life is I only bought enough to keep me going for the next two years. We will see how well it performs later in the year.
Just before imidacloprid got banned I went and bought litres of the concentrate. It is only illegal to purchases and previous stock is okay to retain from what my corporate lawyers tell me.
Doused my entire collection in a spray of - Imidacloprid, Tau-fluvalinate and Tebuconazole (this seems to be a known carcinogen now and is still sold in UK by Bayer Fungus Fighter Plus so please be careful and use PPE) and now I have not seen any white fluff for a while.... plan to empty the greenhouse in 4 weeks and wash every nook and corner with Jeyes fluid.
How soon can I retreat any recommendations?
Sometimes you really have to take drastic action!
I have treated two greenhouses with it so will see how it works, I did wonder if it was best as a root drench or spray. What do others do with systemics .
Tina
varied collection of succulents and cacti but I especially like Euphorbia's, Ariocarpus and variegated agaves.
A friend noticed in the original link I posted it said female mealy bugs don't eat for a while before egg laying therefore systemics have no effect on them. Evidently we also need to use a contact insecticide as well as just a systemic to get rid of them before eggs are laid. Seemingly most of the insecticides do not kill the eggs so you get another crop of mealies later in spite of using systemics.
Nottingham Branch BCSS. Joined the then NCSS in 1961, Membership number 11944. Cactus only collection.
DaveW wrote:A friend noticed in the original link I posted it said female mealy bugs don't eat for a while before egg laying therefore systemics have no effect on them. Evidently we also need to use a contact insecticide as well as just a systemic to get rid of them before eggs are laid. Seemingly most of the insecticides do not kill the eggs so you get another crop of mealies later in spite of using systemics.
DaveW any thoughts if a Tau-Fluvalinate and <*>cloprid mixture would work well?
Is it recommended to rotate systemic's ?
Tina wrote:Compo Bi 58 is available on ebay from Germany.
I have treated two greenhouses with it so will see how it works, I did wonder if it was best as a root drench or spray. What do others do with systemics .
Wow Tina that chemical looks quite toxic... do you use PPE? How about handling the pots after treatment, do you use gloves?
