Advocate - when to bath etc

[permaquandry]

With Frontline Combo you can't bath dog 2 days either side. The gumf on the packet says avoid immersion in water the WHOLE 4 weeks.

Anybody use this and know what to do?

Thanks,

The drug company tell you of the record that as long as the advocate is dry then immersion is okay, but it will last beyond 4 swims/baths per month.
If you have a swimmer the best solution is seresto collar and if lungworm is a problem then Milbemax monthly.