Using a cooling fan without a dust/air filter will increase the amount of dust that goes inside your laptop and will require a lot of cooling
- Yes, as it says. Make sure the cooling pad you buy has some sort of removable mesh/dust/air filter that you can take out, clean it and put in back in just like you do normally with an AC filter
- This is especially true for laptops with only two sided vents or small area of air exhast as this will increase the number of times you have to clean your laptop.
Cooling pad should not be an alternative to dirty clogged fans or bad thermal paste

Recommended Cooling Pads

Mainly the ones that have a removable dust filter and also have short of sponge on the outside so that maximum air can be pushed through and have a decent enough fan. These are the ones one should buy as I said in this hindi video.

IETS GT600

Amazon India $275 or ₹25k → Recommended Sellers only. → Don't order from here as the shipping cost is the reason that it's so expensive.
IETS Tech→ ~$100

Reviewing Now and looks promising

KLIM Mistral ~$70

Zebronics NC9200

Really confused about this. SOme say it's good, some say it's bad. It tries to copy the other premium cooling pad things but it's unclear if it works properly or not.

Amazon India → Recommended Sellers Only
Zebronics Website

Mainly got interested in it because of someone using it with the LOQ 250 5060. The reviews are mixed but this person who has it actually says it's pretty useful and powerful. Guess I will have to get one for myself, keep supporting.

Not 100% Recommended

Requires DIY→ FourDot® Industrial High Speed Laptop Cooling Pad for Gaming Laptops (15.6 Inch Revision D)

Click to see more details

Cooling Pad→ Amazon India
Mesh→ 120mm | 80mm
Note: No Recommended Sellers. I got it from Shree peripherals but recent reviews have been pretty pathetic.

Self Adhesive→ Self Adhesive → Recommended Sellers Only

Along with filters by the same company.

Cautions before you buy any laptop pad