Just had a question if you could treat all three, but safely space out the treatments, or do you have to treat all 3 for several treatments, separately?
How would you space them out?
I'm sure I read on a Guinea pig rescue site that they used to treat any incoming piggies as if they did have, as a precaution.
Can you use the shampoos together but spot on or ivermectin dips after 48 hours?
Hi and welcome
Rescues are taking in guinea pigs from neglect backgrounds regularly and need to conduct a quarantine upon arrival to make sure that any problems are not carried further back into their healthy piggies waiting for a adoption or into a new home.
In newly bought or privately aquired piggies or piggies adopted from a rescue without mandatory quarantine/vet treatment, it is much better to see a vet for a check promptly if you are actually confronted with a problem (you can reclaim the cost from the seller as part of your customer rights for having been sold damaged ware) and then treat targeted with prescribed vet quality products any truly existing problems.
Well cared for healthy guinea pigs with a fully working immune system can to a large degree keep opportunistic issues like fungal or skin parasites under control. It is ultimately much more effective to only treat them when there is a problem, but then to not cheap-skate and treat properly once you have got a diagnosis.
It is much better in the long term to concentrate on good care and a good mainly grass hay based diet in order to ensure that your piggies are as healthy as can be so they are fit to do most of the fending off themselves (there are a lot more illnesses that you can prevent/minimise the risk of by concentrating on strengthening the immune system) and they also have a better chance at living longer.
As my own rescue adoptees have shown, concentrating on a normal good diet and care does even work for the majority of piggies that have been rescued from a proper hellhole unless there is a genetic defect in play; the majority of my own have lived a normal healthy life span or even beyond without needing any preventative care.
These guides here can help you to achieve that:
Diet:
Long Term Balanced General And Special Needs Guinea Pig Diets
Life-long weekly health monitoring:
Long Term Balanced General And Special Needs Guinea Pig Diets
Guinea pig body quirks - What is normal and what not?
Boar Care: Bits, Bums & Baths
More information on the most common potential pitfalls to look out for in newly bought piggies (by far not all of them will actually come down with any of these) and to see a vet over:
New guinea pigs: Sexing, vet checks&customer rights, URI, ringworm and parasites
Here is the link to our comprehensive New Owners guide collection, which you may want to bookmark, browse, read and re-read at need. There is lots of helpful and often very interesting information in there as well as plenty of useful practical and precise tips. The guides are specifically addressing all the most common questions and concerns that new owners have, help to settle in, make friends with and understand your guinea pigs on their own terms, learn what is normal and what not and what to do in case of an illness.
Getting Started - New Owners' Most Helpful Guides
I hope that this helps you?