I've heard that this year it's particularly bad tick season... Whether that's true or not...

However, Thursday night DH plucked 2 ticks off one of our cats. Saturday morning (today) we plucked 4 off the same darn cat. Today's were small, but ticks nonetheless. Both our cats get them, sometimes the ticks are so well hidden that we don't know they have one til they're movement is affected

I suggested keeping the cats inside for a while, but dh said no, and it's my fault ( not my fault fault iykwim) coz I wanted to live in an area with bush...

What products are out there to keep ticks away, and do they work?