I'm surprised your having such a problem with the cold weather here now......The problem with some of the flea and tick products is that they only work if the critter actually bites the host first. They're are then exposed to the toxins. Some of these products are losing their effectiveness because we are creating super bugs, the same way we are creating super bugs that are resistant to antibiotics from over use of them.....
I would be very careful using a combination of products on your pet that contains toxins. They can have a cumulative toxic build up in your dogs system and can create many problems. These toxins are hardest on their liver, kidney, and thyroid and are they are cancer causing....
Since it's getting colder out you might not have to resort to these products so much. There is a very effective spray which contains cedar oils and peppermint oils, this will repel the ticks and fleas off so they don't bite them......Here is a link.....
Natural Flea Control and Tick Remedy. Official TripleSure Site. Flea and Tick
I saw a couple of places that recommended dragging around a couple of yards of
white flannel across the vegetation in your yard so the ticks will attach themselves to it and you can then drop this in a bucket of soapy water to kill them....I have never tried this but next year I might give it a whirl and see what happens....
I hope your dogs are feeling better and this works out for them.....
