This is a huge problem across the US and elsewhere. And ticks are in full force in the summer. Even if you don't walk your Maltipoo through tall grass, there can be ticks just about anywhere. Ticks can cause dogs to contract a range of diseases including Lyme disease, anaplasmosis, babesiosis, ehrlichiosis, and Rocky Mountain spotted fever.
These are the sole method of heartworm transmission. And even if your Maltipoo is receiving heartworm prevention, swarms of mosquitoes can ruin evening walks or outside fun time.
What to do:
The last thing that you'll want to do is put any more chemicals on your Maltipoo or strong preventative drugs in your Maltipoo than you need to, since these can have bad side effects.
For this reason:
Check the heartworm prevention that you are already giving to your Maltipoo; there is a good chance that it already protects from fleas.
Use an all-natural products for fleas, tick, and mosquito protection.