DERMATOLOGY - DL: Ectoparasite control

Question 1

Tx - canine demodicosis

Answer 1

1. ) Aludex (Amitraz) - dip, every 7d, for 10 weeks and until 2 successive skin scrapes have no live mites or eggs
2. ) Advocate (imidacloprid + moxidectin): spot-on, moxidectin is acaricidal, terrible efficacy if given monthly, now licensed for weekly applications but still not highly effective
3. ) Promeris Duo (Metaflumizone + amitraz): spot-on, amitraz is acaricidal, limited information on efficacy
4. ) Oral ivermectin, milbemycin oxime or moxidectin: where amitraz and Advocate don’t work, give daily, for months

Question 2

When is milbemycin most effective for treating demodecosis?

Answer 2

when given with ivermectin but this is toxic to collies

Question 3

What is Frontline Combo and when would you use it?

Answer 3

= Fipronil + methoprene

• when there is resistance (stops eggs developing to adults)
• routine flea control

Question 4

What is Advantage and when would you use it?

Answer 4

= Imidacloprid

• used on rabbits, cats and dogs
• efficacy reduced by wetting (not good on outdoor animals)
• routine flea control

Question 5

What is Advantix and when would you use it?

Answer 5

= Imidacloprid + Permethrin

• dogs only
• also active against ticks
• routine flea control

Question 6

What is Advocate and when would you use it?

Answer 6

= Imidacloprid + Moxidectin

• every 4 weeks
• routine flea control + lung worm

Question 7

What is Comfortis and when would you use it?

Answer 7

= spinosad

• rapid kill (80-100% in 4 hours)
• persists 3-4 weeks
• CANNOT give with ivermectin
• fleas only
• can cause vomiting with risk of losing efficacy (4-5% dogs, 10-15% cats)

Question 8

What is Stronghold and when would you use it?

Answer 8

= selamectin

• every 4 weeks
• routine flea control
• systemic spot on