Re heartworm, can anyone tell me if the 'trail' of slugs is also dangerous

Lungworm..... and apparently yes, the trail is.

No the trail is not dangerous

The life cycle of the Lungworm Canine angiostrongylosis is quite complicated, but basically the larvae go through several stages and it is only certain stages that are infectious to dogs. Stage 3 larvae are the real problem and these only develop inside the slugs themselves, once they have picked up larvae from dog/fox faeces that has earlier stage larvae in them. The slugs do not secrete or expell the larvae in any way, they are inside the slug and they only get inside the dog if the dog eats the slug.

Hope this helps, as this is a very confusing topic for most owners at the moment. If anyone has any more questions on this topic i will be happy to answer them.

I worry with my lot doing this, i have two six month old puppies i kept back from my last litter, they are in to everthing and always have things they shouldn't.

I use advocate every month, I will check but i think it may cover this ?!!

I understand that care has to be taken if a dog drinks from a puddle and/or an outside water supply too.

ETA, I too have read that the trail/mucus of the slug or snail can be dangerous too.
In fact, someone posted an exerpt from an Advocate leaflet saying such.

Thanks Kemist, that's really useful to know... we have outdoor dogs and indoor dogs both of which are exposed to slugs, snails and their trails... On speaking to a drugs rep at Windsor Champ show, she told me that panacur and drontal should cover them sufficiently...  Whether that's the general consensus I don't know.. all vets I have spoken to have given me a different answer!