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Warning over 2 day swimming rule dog owners must follow or risk contamination

Chris Maxted of motorhome dog gate supplier Dog-G8 warns many owners are unaware dogs should wait 48 hours after flea and tick treatment before swimming. He explains the pesticides can wash into waterways and harm wildlife.

Warning over 2 day swimming rule dog owners must follow or risk contamination
Jenny Prowse

Jenny Prowse

Date
July 3, 2025
Read
2 Min
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Chris Maxted, director of motorhome dog gate supplier Dog-G8, warns dog owners about the 2-day rule all owners should follow, as well as the other safety issues they should be aware of, especially as a recent survey of over 100 dog owners revealed that one-third were unaware their dogs should avoid swimming or bathing for several days after applying spot-on parasite treatments.

Risks of flea and tick treatments

"Pesticides in flea and tick treatments, like fipronil and imidacloprid, have been found in waterways where they can harm creatures living in the water. To keep our swimming spots safe for wildlife and dogs, we need to prevent these substances from getting into the water."

48-hour swimming rule

"Dog owners should wait at least 48 hours after applying flea and tick spot-on treatments before allowing their dogs to swim. This waiting period is vital because pesticide levels are highest on the dog's coat immediately after application.

"Swimming too soon can cause these chemicals to wash off into rivers, lakes, and ponds, posing a serious threat to aquatic wildlife."

Exposure to pesticides

"Besides environmental harm, dogs themselves may be at risk if they swim too soon after treatment. The pesticides can wash off into water, and if dogs ingest too much treated water, they may experience water intoxication or pesticide exposure. Following the recommended waiting times protects both pets and the environment."

Flea and tick collars

"Owners using flea and tick collars need to carefully follow the manufacturer's advice about swimming and bathing, as some collars can leave toxic residues on surfaces or continue to release pesticides.

"For dogs that swim regularly, oral tablets are often a better choice since they don't wash off into the environment."

Risks of wild swimming

"Wild swimming comes with uncontrolled variables, such as hidden currents, cold temperatures, and wildlife. Stagnant water can also carry germs and parasites that might cause stomach upset or diarrhoea in dogs. Supervising your dog closely is important for preventing accidents or health issues."

Choosing safe swimming spots

"Look for clean, clear water with good visibility and an easy exit, like a gently sloping bank. Lakes, calm seas, and slow-moving rivers are ideal options, as they reduce risks like hidden debris or strong currents.

"Some lakes and rivers that restrict dog swimming may have designated 'dog dip areas' for this purpose. Check your local council website for specific restrictions and guidance."

Avoiding dangerous waters

"Canals, reservoirs, and areas with blue-green algae should be avoided due to hidden dangers and harmful conditions. Similarly, fast-moving rivers and rough seas can pose serious risks, even on dog-friendly beaches. Always assess the conditions before letting your dog swim."

Health and safety tips

"Dog owners can take several steps to keep their pets safe while swimming. Always supervise them, especially in new spots, and consider a doggy life jacket for extra support. Provide fresh water to discourage drinking from unsafe sources, and dry them off afterwards to prevent issues like hypothermia or a stiff tail."

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